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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

157

B

181

C

108

D

128

Text Solution

Verified by Experts

The correct Answer is:
D
For Fcc, ` r=(a)/(sqrt(2)) =0.3535a`
`= 0.3535xx361=127.6~~ 128` pm
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