Chemistry
The number of valence electrons in Cl- ion is:
- 16
- 8
- 17
- 18
Atomic Structure
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Answer
8
Reason — Chlorine has atomic number 17 and electronic configuration is 2, 8, 7. For Cl-, number of electrons increases by 1 hence electronic configuration becomes 2, 8, 8 and valence electrons will be 8.
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