Question

An ionic compound ab2 possesses caf2 type crystal structure

Answer 1

CaF is a piece of bcc (body centered cubic unit cell) in which Ca+2 is situated at the body focused F - and is situated at the sides of unit cell. Therefore, co-appointment number of Ca+2 is 8 and co-appointment number of F-is 4. Essentially in AB2+ , the co-appointment number of A2+ is 8 and co-appointment number of B-is 4.

Answer 2

Explanation:

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