Question
Question: The co-ordinatation number of a metal crystallizing in a hexagonal closed packed structure is :...
The co-ordinatation number of a metal crystallizing in a hexagonal closed packed structure is :
A
12
B
4
C
8
D
0
Answer
12
Explanation
Solution
Coordination number of spheres in HCP arrangement is = 12.
(6 in its own layer, 3 above and 3 below the layer).