1.

A mineral having the formula AB_(2) crystallizes in the ccp lattice, with A atoms occupying the lattice points. The coordination number of A and B atoms in its structure are

Answer»

4,8
4,4
8,8
8,4

Solution :Since A atoms OCCUPY the lattice POINTS , B atoms will be in all TETRAHEDRAL SITES.
`:.` Coordination NUMBER of B = 4
Coordination number of A = 8


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