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If in diamond there is a unit cell of ca...

If in diamond there is a unit cell of carbon atoms as fcc and if carbon atom is `sp^(3)` hybridised, what fractions of voids are occupied by carbon atom?

A

0.25

B

tetrahedral

C

50% tetrahedral

D

25% octahderal

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
`sp^(3)` hybbridised C-atom suggest a tetrahddral arrangement of 4 C-atoms. For fcc number of atoms (N) per unit cell =4
`:.` Total available tetrahedral voidds `=2N=2xx4=8`
Occupied tetrahedral void `=4` i.e 50% of the total.
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