Each chlorine atom in Cl2 sits with three lone pairs plus the bonding pair. The number of valence electrons it therefore interacts with is:
ASeven of them
BEight of them
CFour of them
DSix of them
Answer & Solution
Correct answer: B. Eight of them
1. Three lone pairs account for six electrons.
2. The shared pair in the bond adds two more.
3. Six plus two is eight of them, satisfying the octet rule.
_Source: OpenStax Chemistry 2e, Chapter 7, Chemical Bonding and Molecular Geometry._
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