In NaCI lattice, the coordination number of Cl- ion is
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a
2
b
6
c
4
d
8
answer is B.
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Detailed Solution
Each Na+ is surrounded by six Cl- ions in NaCl crystal lattice and each Cl- is surrounded by 6 Na+ ions. Co-ordination number is 6 : 6. Radius ratio of NaCl is 0.54.