For which crystal anion-anion contact is valid ?
A. NaF
B. NaI
C. CsBr
D. KCl
A. NaF
B. NaI
C. CsBr
D. KCl
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Correct Answer – B
Iodide ion is largest in size and `Na^+` ion is small in size. Hence, `I^(-) – I^-` contact is possible in `Na^+ I^-` (`Na^+` ion present in the void)