Which of these elements has four valence electrons? A. hafnium (Hf) B. radon (Rn) C. silicon (Si) D. sulfur (S) I thought that Hafnium and silicon both had four valence electrons in their outer shell, but I can't pick them both. Follow • 2. Add comment. Report.The valence electrons are mainly participate in chemical reactions as they contain more energy compared to the inner orbit electrons. some valence electron are present in the inner shell of a transition metal, these electron can either absorb or release energy in the form of a photon. It also explain the electrical conductivity of an element ...For example, in period 4, the valence electrons are the 4s and 4p electrons. Period six on the Periodic Table starts the row after Xenon. The electron shell 6s2 6p2 corresponds to the atomic ...Two types of elements used doping: Trivalent element - with 3 valence electrons and Pentavalent element - with 5 valence electrons. N-type semiconductors In order for our silicon crystal to conduct electricity, we need to introduce an impurity atom such as Arsenic (As), phosphorus (P), bismuth (Bi), or Antimony (Sb) into the crystalline ...Elements which have 4 valence electrons are generally metalloids. The metalloids show the properties of both metals and non-metals. We know that, no. of protons= Atomic number So, Atomic no.= 32 Hence, The element is Germanium which is a metalloid with 4 valence electrons and has 32 protons in nucleus of each atom because it has atomic no. 32The valence electrons for main group elements are those with the highest n level. For example, gallium (Ga, atomic number 31) has the electron configuration [Ar]4s 2 3d 10 4p 1, which contains three valence electrons (underlined). The completely filled d orbitals count as core, not valence, electrons. Transition elements or transition metals.The electronic configuration of each element is decided by the Aufbau principle which states that the electrons fill orbitals in order of increasing energy levels. The equation is: 1s<2s<2p<3s<3p<4s<3d<4p<5s<4d<5p<6s<4f<5d<6p<7s<5f<6d<7p. The concept of electronic configuration has replaced the older concept of valency and valence electrons. A Lewis electron dot symbol (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom. These dots are arranged to the right and left and above and below the symbol ...It has four valence electrons, so we already know we have four Valence electrons. Okay, and all we have to do here to find the number of inner core electrons is subtract four from both sides, and what's left is 10 that 10. What equal the number off in our core electrons? Yeah, so we'd say that's the silicon. Atom has four valence electrons ...It has 5 valence electrons in the 2p level. Its electron configuration is 1s 2 2s 2 2p 5. It will usually form the anion F-since it is extremely electronegative and a strong oxidizing agent. Fluorine is a Lewis acid in weak acid, which means that it accepts electrons when reacting. Fluorine has many isotopes, but the only stable one found in ...A Lewis symbol consists of an elemental symbol surrounded by one dot for each of its valence electrons: Figure 5.1.1 5.1. 1 shows the Lewis symbols for the elements of the third period of the periodic table. Electron dots are typically arranged in four pairs located on the four "sides" of the atomic symbol.Its valence electron shell is 2s 2 2p 1, so it has three valence electrons. The third electron will go on another side of the symbol: \[\mathbf{\dot{B}}\mathbf{:}\] Again, it does not matter on which sides of the symbol the electron dots are positioned. For carbon, there are four valence electrons, two in the 2s subshell and two in the 2p subshellHelium is an exception that has only two valence electrons, but they are shown paired. Figure 2.6.1 2.6. 1: Lewis symbols or electron-dot symbols of the first twenty elements in the periodic table. The electron dots in the Lewis structure are a convenient way to determine how many bonds an atom of an element can make.The number of electrons in the valence shell corresponds to the group number at the top of the periodic table. Thus, every Group 4A element has four electrons ...Explanation: Silicon is element 14 in the Periodic Table. It has two electrons in its first shell, eight electrons in the second shell, and four electrons in the third shell. Since the electrons in the third shell are the outermost electrons, silicon has four valence electrons. The video below shows how to use the Periodic Table to determine ...Answer. Calcium. Explanation : See Periodic table. Match row and column. Row for Period and column for valence electron. Means Calcium is an element which lies at Period 4 in Periodic table and having two valence electrons (Period 4 means 4th shell being occupied having 2 electrons in 4th or outermost shell)Answer: carbon group. All the carbon group atoms, having four valence electrons, form covalent bonds with nonmetal atoms; carbon and silicon cannot lose or gain electrons to form free ions, whereas germanium, tin, and lead do form metallic ions but only with two positive charges. arrow right. Explore similar answers.3.1-4. Valence Electron Configurations of Transition Elements The valence electron configuration of the first row transition elements has the form 4s 2 3d b, where b is the position of the element in the d block.Cr and Cu are the two exceptions because they each promote one of their 4s electrons into the 3d sublevel to obtain half-filled and completely filled 3d sublevels.Richard 5 months ago That isn't strictly true for all elements. It is true for less massive elements in the first and second periods. This pattern begins to break down for elements in the third period (like sulfur and chlorine) who can still have an octet and achieve stability, but still have an unfilled d subshell.The Group 4A elements have four valence electrons in their highest-energy orbitals (ns2np2). How many protons and neutrons are in germanium? In the concealed quantum world of the atomic nucleus, however, phase transitions are more subtle. Germanium-72 has 32 protons (like all germanium isotopes) and 40 neutrons. Those 40 neutrons pair off ...Select the statement that correctly describes one of the bulk elements necessary for life. Carbon (C) has four valence electrons and is likely to form covalent bonds. Based upon the valence electron number of oxygen, which of the following is true of its bonding capabilities? (Check all that apply.)For main group elements (i.e s-block and p-block elements), the valence electrons are the electrons present in the outermost orbit. But for most of the transition and inner transition elements, the valence electrons are the electrons present in the shells outside the noble gas core.Chemistry. Chemistry questions and answers. Imagine a molecule XY2 where X has 4 valence electrons and Y has 6 valence electrons. Element X has a valence of 4 and element Y has a valence of 2. How many bonds and lone pairs of electrons are on the central atom, X? (Hint: Draw the Lewis structure.)'. Two single bonds and two lone pairs of electrons.Its valence electron shell is 2s 2 2p 1, so it has three valence electrons. The third electron will go on another side of the symbol: \[\mathbf{\dot{Be}}\mathbf{:}\] Again, it does not matter on which sides of the symbol the electron dots are positioned. For carbon, there are four valence electrons, two in the 2s subshell and two in the 2p subshellThe Lewis electron structure for the NH 4+ ion is as follows: The nitrogen atom shares four bonding pairs of electrons, and a neutral nitrogen atom has five valence electrons. Using Equation 4.4.1, the formal charge on the nitrogen atom is therefore. formalcharge(N) = 5 −(0 + 8 2) = 0.Four. The octet rule states that atoms can fill their outer shells with up to 8 electrons (a full shell of 8 is the most stable configuration). Since Carbon only has 4 of its outer electron slots (or valence electrons) full, it has room to make bonds with 4 other atoms, assuming they are all single bonds. This will fill Carbon's valence shell and give it all 8 electrons it needs to be stable.The Group 7A elements have seven valence electrons in their highest-energy orbitals (ns 2 np 5). This is one electron away from having a full octet of eight electrons, so these elements tend to form anions having -1 charges, known as halides: fluoride, F-; chloride, Cl-, bromide, Br-, and iodide, I-. In combination with other nonmetals, the ...The Group 4A elements have four valence electrons in their highest-energy orbitals (ns 2 np 2). Carbon and silicon can form ionic compounds by gaining four electrons, forming the carbide anion (C 4-) and silicide anion (Si 4-), but they more frequently form compounds through covalent bonding. Tin and lead ...When forming ions, elements typically gain or lose the minimum number of electrons necessary to achieve a full octet. For example, fluorine has seven valence electrons, so it is most likely to gain one electron to form an ion with a 1- charge. We can use this method to predict the charges of ions in ionic compounds. In addition, the more valence electrons an element has, the more likely it is to gain electrons to form a stable octet. The less valence electrons an atom has, the least likely it will gain electrons. Electron affinity decreases down the groups and from right to left across the periods on the periodic table because the electrons are placed in a higher energy …Its valence electron shell is 2s 2 2p 1, so it has three valence electrons. The third electron will go on another side of the symbol: \[\mathbf{\dot{B}}\mathbf{:}\] Again, it does not matter on which sides of the symbol the electron dots are positioned. For carbon, there are four valence electrons, two in the 2s subshell and two in the 2p subshellWhat element in Period 4 has 4 valence electrons? Explanation: Scandium atomic number 21 is in the fourth period. Can there be 4 electron shells? This model breaks down at the n=3 shell because each shell has subshells. There are 4 subshells, s, p, d, and f. Each subshell can hold a different number of electrons….Search form.Elements which have 4 valence electrons are generally metalloids. The metalloids show the properties of both metals and non-metals. We know that, no. of protons= Atomic number So, Atomic no.= 32 Hence, The element is Germanium which is a metalloid with 4 valence electrons and has 32 protons in nucleus of each atom because it has atomic no. 32element in Period 2 with 2 valence electrons. B. element in Period 2 with 3 valence electrons. C. element in Period 2 with 4 valence electrons. N. element in Period 2 with 5 valence electrons. O. element in Period 2 with 6 valence electrons.Hydrogen's valence number is one, because it has only one valence electron and needs only one shared electron to fill its energy levels. This means it can bond with many elements. For example, four hydrogen atoms can bond with a carbon atom, which has four valence electrons, to form methane. Similarly, three hydrogen atoms can bond with a ...All the elements in group 3A are electropositive; they form positively charged ions by giving up their valence electrons. 3A elements have a total of 3 valence electrons, most of these elements ...Study with Quizlet and memorize flashcards containing terms like Most nonmetals form covalent or ionic bonds, depending on the element with which they react. Carbon predominantly forms covalent bonds since it has 4 valence electrons and can form single, double or triple bonds with other elements. What element will form an ionic bond with carbon?, Hydrogen can react with many other elements.Carbon is situated in Group 14th and has an atomic number of 6. The first shell of Carbon has 2 electrons and the outer shell or valence shell of Carbon has 4 electrons, hence, the number of valence electrons in the Carbon atom is 4. The orbital diagram for Carbon is drawn by following three principles - the Aufbau principle, Hund's ...It stacks the elements in columns according to the number of valence electrons in an atom of the element. Valence electrons are those in the outermost shell of the atom and the ones that participate in reactions. The number of valence electrons is associated with the element's reactivity.Answer link. Calcium See Periodic table. Match row and column. Row for Period and column for valence electron. Means Calcium is an element which lies at Period 4 in Periodic table and having two valence electrons (Period 4 means 4th shell being occupied having 2 electrons in 4th or outermost shell)Valence Electrons. The electrons in the outermost shell are the valence electrons the electrons on an atom that can be gained or lost in a chemical reaction. Since filled d or f subshells are seldom disturbed in a chemical reaction, we can define valence electrons as follows: The electrons on an atom that are not present in the previous rare gas, ignoring filled d or f subshells.The third major category of elements arises when the distinguishing electron occupies an f subshell. The first example occurs in the case of the lanthanoids (elements having atomic numbers between 57 and 71).The lanthanoids have the general electron configuration [Kr]4d 10 4f i 5s 2 5p 6 5d 0 or 1 6s 2. where i is a number between 0 and 14. Thus in the building-up process for the lanthanoids ...An expanded valence shell is often written for oxoanions of the heavier p-block elements, such as sulfate (SO 4 2−) and phosphate (PO 4 3−). Sulfate, for example, has a total of 32 valence electrons [6 + (4 × 6) + 2]. If we use a single pair of electrons to connect the sulfur and each oxygen, we obtain the four-coordinate Lewis structure (a). Representative metals are members of s block and parts of p block of the table Elements of group 1, (except hydrogen) 2, 13, (except boron) tin and lead of group 14, and bismuth of group 15 are ...Responses. fluorine. How many valence electrons do most stable atoms have? 8. Use the periodic table to answer the question. Which atom generally obtains a stable configuration by sharing electrons? (p) Which statement best explains why carbon bonds to four hydrogen atoms to form methane but to only two oxygen atoms to form carbon dioxide ...A Lewis electron dot diagram (or electron dot diagram, or a Lewis diagram, or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom. These dots are arranged to the right and left and above and below the ...For example, oxygen has six valence electrons, two in the first shell and four in the second shell. Metals will form positive ions and to get a full outer shell by losing electrons, three seems to be the maximum number of electrons that can be lost (Al 3+). Elements in group 1 and group 2 are metals. Atoms of group 1 elements have one electron ...Group IVA elements: C, Si, Ge, having 4 electrons in the valence shell as shown in Figure below form compounds by sharing electrons with other elements without forming ions. This shared electron bonding is known as covalent bonding. Note that the center atom (and the others by extension) has completed its valence shell by sharing electrons.. Elements in the same column have the same number of valence electrons and have analogous valence electron configurations: these columns are called groups. The single exception is helium, which has two valence electrons like beryllium and magnesium, but is typically placed in the column of neon and argon to emphasise that its outer shell is full.The next atom is boron. Its valence electron shell is 2s 2 2p 1, so it has three valence electrons. The third electron will go on another side of the symbol: \[\mathbf{\dot{B}}\mathbf{:} \nonumber \] Again, it does not matter on which sides of the symbol the electron dots are positioned. For carbon, there are four valence electrons, …An intrinsic semiconductor. Note each +4 ion is surrounded by four electrons. Now, if one of the atoms in the semiconductor lattice is replaced by an element with three valence electrons, such as a Group 3 element like Boron (B) or Gallium (Ga), the electron-hole balance will be changed.How to Find the Number of Valence Electrons for Transit…Its valence electron shell is 2s 2 2p 1, so it has three valence electrons. The third electron will go on another side of the symbol: \[\mathbf{\dot{Be}}\mathbf{:}\] Again, it does not matter on which sides of the symbol the electron dots are positioned. For carbon, there are four valence electrons, two in the 2s subshell and two in the 2p subshellCarbon has 6 electrons --- 2 in the first shell, and 4 in the second shell (so four valence electrons). Nitrogen has 7 electrons --- 2 in the first shell, and 5 in the second shell (so five valence electrons). ... The number of valence electrons for each main group element can be determined by the column, or group, it occupies on the periodic ...(4 points) 2 4 6 12, An atom's Lewis dot structure has four dots. Which of the following elements could it be, and why? (4 points) Aluminum, because it is a metal with four electrons in period 3. Beryllium, because it is in period 2 and has four total electrons. Carbon, because it is in group 14 and has four valence electrons. What element has 2 electron shells and 4 valence electrons? Two electrons imply that the element is in the second period. The 4 valence electrons says that it is located in group 4A (or group 14 ...B)2. C)3. D)4. b. Study with Quizlet and memorize flashcards containing terms like Chlorine and element x have similar chemical properties.An atom of element x could have an electron configuration of a)2-2 b)2-8-1 c) 2-8-8 d)2-8-18-7, Which electrons in a calcium atom in the ground state have the greatest effect on the chemical properties of ...Carbon is a very unique element in that it has four valence electrons in its outer orbitals and can form four single covalent bonds with up to four other atoms at the same time. These atoms are usually oxygen, hydrogen, nitrogen, sulfur, phosphorous, and carbon itself; the simplest organic compound is methane, in which carbon binds only to ...Group IV A atoms have four valence electrons to be stable these atoms can lose four or gain four electrons to achieve stability. Losing 2 electrons can create a filled s subshell. This electron configuration is not as stable as losing 4 but is found in nature. As example is Lead Pb^+2 and Pb^+4 Group VI A atoms have six valance electrons. Atoms ...In chemistry, valence electrons are the electrons that are located in the outermost electron shell of an element. Knowing how to find the number of valence electrons in a particular atom is an important skill for chemists because this information determines the kinds of chemical bonds that it can form and, therefore, the element's reactivity.Which element has four valence electrons? Carbon has 6 protons or the electron distribution (equal to protons) is equal to 2 in first energy shell and 4 in the outer energy shell. This makes the carbon atom look out for four electrons to fill it's octet. Q. Carbon has a valency of four. It is capable of forming single bonds with four other ...element in Period 2 with 2 valence electrons. B. element in Period 2 with 3 valence electrons. C. element in Period 2 with 4 valence electrons. N. element in Period 2 with 5 valence electrons. O. element in Period 2 with 6 valence electrons.What element has three valence electrons in the 6p shell? What element has 6 valence shell electrons and 16 protons? Which of the following does not have 8 valence electrons? a) Ar b) Kr c) Cl d) Ne; Which atom has the highest ionization energy? a. Na b. P c. Cl d. K; Which element is more likely to gain electrons: Na, F, or Ne? Which of the ...Considering the octet rule and the definition of ionic bond, the correct option is the second option: "An ionic bond is likely because they will want to give away two valence electrons in order to become stable.". Consider first the octet rule, which states that atoms combine or form ions with the goal of obtaining 8 electrons at their last level.In this way, an electronic configuration ...Si has four valence electrons, the same number as carbon. Therefore, silicon would be able to form long chains, including branches, that could act as skeletons for smaller molecules. It would clearly do this much better than neon (with no valence electrons) or aluminum (with three valence electrons).Since tin and lead are metals, the melting points of these elements are much lower. Four Covalent Compounds. Four covalent compounds are compounds in which the four electrons in the valence shell play an active role in bonding. Most of the group 14 element possesses this property. Compounds Formed by Group 14 Elements Hydrides of Group 14Carbon's ability to form bonds with four other atoms goes back to its number and configuration of electrons. Carbon has an atomic number of six (meaning six protons, and six electrons as well in a neutral atom), so the first two electrons fill the inner shell and the remaining four are left in the second shell, which is the valence (outermost ...(4 points) 2 4 6 12, An atom's Lewis dot structure has four dots. Which of the following elements could it be, and why? (4 points) Aluminum, because it is a metal with four electrons in period 3. Beryllium, because it is in period 2 and has four total electrons. Carbon, because it is in group 14 and has four valence electrons. 39.The number of valence electrons in each atom of an element affects the element's A)atomic number B)mass number C)number of electron shells D)number of valence electrons 40.The elements in Group 2 have similar chemical properties because each atom of these elements has the same A)22 B)2 C)32 D)4 41.What is the total number of valence ...Which of the following elements have 4 valence electrons on their neutral atoms in the gas phase (select all that apply): Se Ocr O co This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts.Figure 9.4.1 9.4. 1: (a) The radius of an atom is defined as one-half the distance between the nuclei in a molecule consisting of two identical atoms joined by a covalent bond. The atomic radius for the halogens increases down the group as n increases. (b) Covalent radii of the elements are shown to scale.Elements which have 4 valence electrons are generally metalloids. The metalloids show the properties of both metals and non-metals. We know that, no. of protons= Atomic number So, Atomic no.= 32 Hence, The element is Germanium which is a metalloid with 4 valence electrons and has 32 protons in nucleus of each atom because it has atomic no. 32CH4 Valence electrons. The electrons that participate in the bond formation and are in the outermost shell of the atom are referred to as valence electrons. Carbon is a p block element present in group 14th and 2nd period in the periodic table and has atomic number of 6. Hydrogen is the very first element in the periodic table having an atomic ...History. In 1913 Bohr proposed a model of the atom, giving the arrangement of electrons in their sequential orbits. At that time, Bohr allowed the capacity of the inner orbit of the atom to increase to eight electrons as the atoms got larger, and "in the scheme given below the number of electrons in this [outer] ring is arbitrary put equal to the normal valency of the …Allotropes of an element can have very different physical and chemical properties because of different three-dimensional arrangements of the atoms; the number of bonds formed by the component atoms, however, is always the same. ... Carbon has 4 valence electrons, each oxygen has 6 valence electrons, and there are 2 more for the −2 charge ...Valence Electrons. The electrons in the outermost shell are the valence electrons the electrons on an atom that can be gained or lost in a chemical reaction. Since filled d or f subshells are seldom disturbed in a chemical reaction, we can define valence electrons as follows: The electrons on an atom that are not present in the previous rare gas, ignoring filled d or f subshells.N shell = 32 and so on. -As it is given that the element has 4 shells and the valence shell has only 3 electrons which means the first 3 shells have electrons according to the K, L and M shells. So the total number of electrons present in this element is: 2 + 8 + 18 + 3 = 31 electrons. -As we know that for every element, its atomic number is ...Answer: An atom having four valence electrons is called "tetravalent atom." The type of this atom is "tetravalent atom." Step-by-step explanation. An atom ...Answer. Calcium. Explanation : See Periodic table. Match row and column. Row for Period and column for valence electron. Means Calcium is an element which lies at Period 4 in Periodic table and having two valence electrons (Period 4 means 4th shell being occupied having 2 electrons in 4th or outermost shell)Study with Quizlet and memorize flashcards containing terms like Which property do the elements in each column of the representative elements series of the periodic table have in common?, Which element has six valence electrons?, Which statement correctly compares the number of protons and electrons in atoms of rubidium (Rb) and calcium (Ca)? and more.Lewis Symbols. At the beginning of the 20 th century, the American chemist G. N. Lewis (1875–1946) devised a system of symbols—now called Lewis electron dot symbols (often shortened to Lewis dot symbols) that can be used for predicting the number of bonds formed by most elements in their compounds.Each Lewis dot symbol consists of the chemical …Two elements in Period 3 are adjacent to one another in the periodic table. The ground-state atom of one element has only s electrons in its valence shell; the other one has at least one p electron in its valence shell. Identify the elements. Which element below has five valence electrons? a. Si b. Se c. S d. I e. SbAnswer link. Calcium See Periodic table. Match row and column. Row for Period and column for valence electron. Means Calcium is an element which lies at Period 4 in Periodic table and having two valence electrons (Period 4 means 4th shell being occupied having 2 electrons in 4th or outermost shell)A Lewis electron dot symbol (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom. These dots are arranged to the right and left and above and below the symbol ...Hence we assign a valence of 1 to H and to Cl. The valence of O is twice as great, and so we assign a value of 2. Example 4.4.1 4.4. 1: Formula Predictions. Use the data in the first table to predict what formula would be expected for a compound containing (a) sodium and fluorine; (b) calcium and fluorine.The Group 8A elements already have eight electrons in their valence shells, and have little tendency to either gain or lose electrons, and do not readily form ionic or molecular compounds. Ionic compounds are held together in a regular array called a crystal lattice by the attractive forces between the oppositely charged cations and anions.The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds. When discussing the octet rule, we do not consider d or f electrons. Only the s and p electrons are involved in the octet rule, making it useful for ...The number of valence electrons of an element can be determined by the periodic table group (vertical column) in which the element is categorized (Table \(\PageIndex{1}\)). With the exception of groups 3-12 (the transition metals), the units digit of the group number identifies how many valence electrons are associated with a neutral atom of ...Group of answer choices. period 4; group 8. period 5; group 6. period 4; group 6. period 4; group 16. period 5; group 18. An element that has the valence electron configuration 4 s2 4 p4 belongs to which period and group? Group of answer choices. period 4; group 8.The electronic configuration of each element is decided by the Aufbau principle which states that the electrons fill orbitals in order of increasing energy levels. The equation is: 1s<2s<2p<3s<3p<4s<3d<4p<5s<4d<5p<6s<4f<5d<6p<7s<5f<6d<7p. The concept of electronic configuration has replaced the older concept of valency and valence electrons.The number of valence electrons an atom has is determined by the group number it belongs to on the periodic table. Magnesium belongs to group 2A on the periodic table, which means it has two valence electrons. Carbon belongs to group 4A and has four valence electrons, while Fluorine belongs to group 7A and has seven valence electrons.2. Find the electron configuration for the element you are examining. Once you know an element's electron configuration, finding its number of valence electrons is quite simple (except, of course, for the transition metals.) If you're given the configuration from the get-go, you can skip to the next step.May 20, 2018 · A Lewis electron dot diagram (or electron dot diagram, or a Lewis diagram, or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom. These dots are arranged to the right and left and above and below the ... A few examples which follow the octet rule are : CO2, NaCl, MgO. 1.CO2. Carbon contains four electrons in its outermost shell. Also, carbon should have four electrons to complete its octet when it is combined with two molecules of oxygen. Here each carbon atom requires two electrons to complete its octet. Carbon and oxygen share their outermost ...The valence electrons on atoms determine an element's reactivity. The more easily an element can attain a noble-gas electron configuration by losing or gaining a small number of electrons in its valence shell, the more reactive the element tends to be. Elements with the same valence shell electron configuration have similar chemical properties.N shell = 32 and so on. -As it is given that the element has 4 shells and the valence shell has only 3 electrons which means the first 3 shells have electrons according to the K, L and M shells. So the total number of electrons present in this element is: 2 + 8 + 18 + 3 = 31 electrons. -As we know that for every element, its atomic number is ...It has 6 valence electrons. It needs to make 2 bonds to get an octet. The simple logic is that 6 + 2 = 8. In the diagram above, we show oxygen making 2 bonds. The 2 sticks/lines account for 2 of the 6 valence electrons. The other 4 valence electrons are found as the two pairs of dots that won't bond.4: Atoms and Elements 4.7: Ions - Losing and Gaining Electrons Expand/collapse global location ... In cases where an atom has three or fewer valence electrons, the atom may lose those valence electrons quite easily until what remains is a lower shell that contains an octet. Atoms that lose electrons acquire a positive charge as …Ge - 4e - → Ge 4+. Here, the electron configuration of germanium ion (Ge 4+) is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10. This electron configuration shows that the germanium ion (Ge 4+) has three shells and the last shell has eighteen electrons. In this case, the valence electrons of the germanium ion (Ge 4+) are eighteen.Electrons that are not in the valence level are not shown in the Lewis symbol. The reason for this is that the chemical reactivity of an atom of the element is solely determined by the number of its valence electrons, and not its inner electrons.Lewis symbols for atoms are combined to write Lewis structures for compounds or molecules with bonds between atoms.Covalent bonds are formed by two atoms sharing electrons. The atoms in group 6A make two covalent bonds. 4.2: Covalent Bonds and the Periodic Table is shared under a CC BY-NC-SA 3.0 license and was authored, remixed, and/or curated by LibreTexts. Atoms share electrons and form covalent bonds to satisfy the octet rule.Each of the elements in this group has 4 electrons in its outer shell. An isolated, neutral group 14 atom has the s 2 p 2 configuration in the ground state. These elements, especially carbon and silicon, have a strong propensity for covalent bonding, which usually brings the outer shell to eight electrons.A dot is placed above, below, left, and right of the symbol to represent the four valence electrons. If the element has more than four valence electrons, the dots are then partnered together.Scientists are studying compounds in a newly discovered rain forest plant.The plant produces an unusual substance that local people say acts as an anesthetic. One scientist tested the substance with the chemical indicator copper (II) sulfate and sodium hydroxide. If the test is negative, which type of macromolecule is not present in the ...In this case, 2+2+6+2+6+2+10+6+2+1= 39 and Z=39, so the answer is correct. A slightly more complicated example is the electron configuration of bismuth (symbolized Bi, with Z = 83). The periodic table gives the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p65s2 4d10 5p6 6s2 4f14 5d10 6p3.