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A given metal crystallises out with a cu...

A given metal crystallises out with a cubic structure having edge length of 361 pin. If there are four metal atoms in one unit cell, what is the radius of one atom?

A

80 pm

B

108 pm

C

40 pm

D

127 pm

Text Solution

Verified by Experts

The correct Answer is:
D
`Z=4`, i.e., structure is fcc.
Hence, `r=a/(2sqrt2) =361/(2sqrt2) =127.65 " pm " ~~ 127` pm
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