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The number of octahedral and tetrahedral...

The number of octahedral and tetrahedral holes respectively present in a hexagonal close packed (hep) crystal of 'X’ atoms are

A

X, 2X

B

X,X

C

2X, X

D

2X,2X

Text Solution

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The correct Answer is:
a
In a hexagonal close packed (hep) crystal containing ’X' atoms,
Number of octahedral voids generated = X
Number of tetrahedral voids generated = 2X
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