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Types of Unit Cell

The number of...

Question

The number of carbon atoms in the unit cell of diamond is ___

A

6

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B

1

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C

4

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D

8

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Solution

The correct option is C 4
8
Total no. of atoms present in a diamond cubic unit cell is 1 + 3 + 4 = 8. Since each carbon atom is surrounded by four more carbon atoms,the co-ordination number is 4.

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Similar questions

Q. The number of carbon atoms per unit cell of diamond unit cell is:

Q. The number of carbon atoms per unit cell of diamond is:

Q. Select the correct statement(s) about cubic structure of diamond.
1. Effective number of atoms present in a diamond cubic cell is

8

.
2. Each carbon is surrounded by four more carbon atoms.
3. Atomic radius of carbon is

\frac{\sqrt{3} \times a}{8}

, where a is edge length of cube.
4. Approximate packing fraction of unit cell is

\frac{\sqrt{3} \times π}{16}

.

Q. In a crystal of diamond:
(i) How many carbon atoms are present per unit cell?
(ii) What type of lattice does diamond crystallize in?
(iii) How many carbon atoms surround each carbon atom?
(iv) How are they arranged?

Q. If in diamond, there is unit cell of carbon atoms as fcc and if carbon atom is

s p^{3}

hybridized what fractions of void occupied by carbon atom?

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