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Question

What is the coordination number of hexagonal close packing (hcp) lattice?

A
12
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B
8
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C
4
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D
6
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Solution

The correct option is A 12
Coordination Number in hcp :
In hcp lattice
Each sphere touches 6 spheres in its layer +3 spheres below the layer+3 spheres,above the layer



Examples:Mg,Cd,Zn,Ti and Be

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