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A metal crystallises in face-centred cub...

A metal crystallises in face-centred cubic lattice. What is the closest distance between metal atoms if edge length of cubic unit cell is 4.242 Å?

A

367.3 pm

B

150 pm

C

300 pm

D

183.6 pm

Text Solution

Verified by Experts

The correct Answer is:
C
We know that for face-centred cubic lattice distance of closest approach `(d) = a/sqrt2`
`:. D = (24.242)/sqrt2 = 3Å = 300` pm .
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