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The coordination number of an fcc struct...

The coordination number of an `fcc` structure for a metal is `12`, since

A

Each atom toucher four others in same layer, two in layer above and six in layer below

B

Each atom touches four others in same layer, four in layer above and four in layer below.

C

Each atom touches six others in same layer, three in layer above and three in layer below

D

Each atom touches eight others in same layer, two in layer above and two in layer below.

Text Solution

Verified by Experts

The correct Answer is:
A
a.
Each atom touches `4` atom in the same layer, `4` inabove layer `4` in layer below.
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