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Copper crystallises in a face centred cu...

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

A

108 pm

B

128 pm

C

157 pm

D

181 pm

Text Solution

Verified by Experts

The correct Answer is:
B
Since copper crystallises in a face centred cubic lattice,
atomic radius `=a/(2sqrt(2))`
`361/(2xx1.414)=127.6~=128`
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