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Multiple Bond Formation

Derive the pa...

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Derive the packing fraction of Diamond

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packing fraction of a diamond type crystal? (given

\sqrt{3} π = 5.44

π = 3.2, \sqrt{3} = 1.7

Q. Packing fraction of

F C C

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}

.

Packingfraction=isotopicmass−massnumbermassnumber×104

Reason: Positive value of packing fraction implies for the unstability of nucleus.

Q. Packing fraction is minimum in .

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