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How many valence electrons are in a chlorine atom? a.7 b.6 c.18 d.17 e.8 2
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How many valence electrons are in a chlorine atom? a.7 b.6 c.18 d.17 e.8 2

User VicM
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Answer is a.7
Because of the electron configuration:1s2,2s2,2p6,3s2,3p5
Shell (3) the last shell has 7 electrons (3s2+3p5=7)
Valence electrons
User NoDakker
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