Question

Tje coordination numver of atoms in bcc crystal lattice is

a. 2
b. 4
c. 6
d. 8​

Answer 1

Coordination number – the number of nearest neighbor atoms or ions surrounding an atom or ion. For FCC and HCP systems, the coordination number is 12. For BCC it's 8. The ratio of atomic sphere volume to unit cell volume, assuming a hard sphere model.

Answer 2

Correct option :-

$(a)2$

Explanation :-

If a metal has a bcc crystal structure, the coordination number is 8,because each atom touches four atoms in the layer above it, four in the layer below it and none in its own layer.

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