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Copper crystalline in a face centred cub...

Copper crystalline in a face centred cubic lattice with a unit cell length of `361p m` .What is the radius of copper atom in p m?

A

157

B

181

C

108

D

128

Text Solution

Verified by Experts

The correct Answer is:
D
As per FCC structure
`4r=sqrt2 a`
`r=(sqrt2 xx 361)/(4)` = 128 pm
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