How many valence electrons do metals and nonmetals have
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How many valence electrons do metals and nonmetals have

[From: ] [author: ] [Date: 12-10-19] [Hit: ]
each group increase by one valence electron. Therefore, in group 15, it has 5, group 16 has 6, group 17 has 7,......
i need help with this question on my chem homework when comparing metals and nonmetals. It says the oxidation # of metals and nonmetals.. anybody know?

i think its 1-3 for metals and 3-8 for nonmetals , not sure.

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Well, it depends. In group 1, the alkali metals have 1 valence electron. Group 2, alkaline earth metals, has 2 valence electrons. Then we skip the transition elements because they have more than one charges. In group 13, it has 3 valence electrons. In group 14, it has 4 valence electrons. As you go across the group, each group increase by one valence electron. Therefore, in group 15, it has 5, group 16 has 6, group 17 has 7, and group 18 has 8 valence electrons, which means group 18 is the most stable group due to its 8 valence electrons around the valence shell (energy level). As a result, metals have about 1-3 valence electrons (group 1-2, 13) and nonmetals have about 5-8 valence electrons (group 15-18). In group 14, carbon is nonmetal; however, Si and Ge are metalloids and Sn and Pb are metals. So, group 14 is mixed with different types of elements.

Hope this helps!

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Its the number of outer electrons, e.g. for Na its 1, Mg its 2, ..........Cl its 7, Ar its 0.

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It depends
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