Question

For some crystals, the radius ratio for cation and anion is $0.525$. Its coordination number will be:

• A. $2$
• B. $4$
• C. $6$
• D. $8$

Answer 1

Answer: (C)

$6$

The radius ratio for co-ordination number $4,6$ and $8$ lies in between the ranges $[0.225-0.414],[0.414-0.732]$ and $[0.732-1]$ respectively.

The given ratio of cation and onion is have coordination no is 6

Hence C is correct option