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Copper crystallises in face-centred cubi...

Copper crystallises in face-centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in pm?

A

108

B

128

C

157

D

181

Text Solution

Verified by Experts

The correct Answer is:
B
`asqrt(2)=4r`
`361xxsqrt(2)=4r`
r=128 pm
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