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Copper crystallises in fcc with a unit c...

Copper crystallises in fcc with a unit cell length of 361 pm. What is the radius of copper atom?

A

108pm

B

127pm

C

157pm

D

181pm

Text Solution

Verified by Experts

The correct Answer is:
2
For FCC,
`sqrt(2)a=4r` (the atoms touches each other along the face-diagonal)
`r=(sqrt(2)a)/(4)=(sqrt(2)xx361)/(4)=127`pm
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