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  • Need explanation for: The number of atom per unit cell of Hexagon is

The number of atom per unit cell of Hexagon is

  • Option 1)

    8

  • Option 2)

    6

  • Option 3)

    4

  • Option 4)

    2

 

Answers (1)

The number of atom in HCP

 =12\times \frac{1}{6}+2\times \frac{1}{2}+3=6

 

 

Hexagonal close packing -

Total number of atom per unit cell = 6

Packing fraction = 0.74

Coordination number = 12

- wherein

It is a ABAB type packing.

 

 


Option 1)

8

This is incorrect

Option 2)

6

This is correct

Option 3)

4

This is incorrect

Option 4)

2

This is incorrect

Posted by

Vakul

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