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Question

The co-ordination number of the cation in the Face centered cubic(FCC) lattice is:

A
4
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B
8
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C
3
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D
12
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Solution

The correct option is D 12
The coordination number of a central atom is equal to the number of its surrounding atoms.

The face-centered cubic (fcc) has a coordination number of 12 and contains 4 atoms per unit cell.

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