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a metal crystallizes with a face-centere...

a metal crystallizes with a face-centered cubic lattice.The edge of the unit cell is `408` pm. The diameter of the metal atom is :

A

288 pm

B

408 pm

C

144 pm

D

204 pm

Text Solution

Verified by Experts

The correct Answer is:
A
for ccp `sqrt2a = 4r`
`(sqrt2 xx 408)/(2) = 2r` (2r = diameter)
diameter = 288.5
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