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Question

When Zn converts from its melted state to its solid state, it has HCP structure. Find out nearest no. of nearest atoms.

A
6
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B
8
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C
12
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D
4
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Solution

The correct option is C 12
When Zinc is converted from it's melted state to solid state ,it has HCP structure. In HCP structure , the coordination number is 12. Since Zn is in HCP structure the number of nearest neighbours is 12, six are in the plane ,3 above the plane and 3 below the plane.
So correct option is C.

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