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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 `sqrt(2)a = 4R`
`(sqrt(2) xx 408)/2 = 2R` (2R = Diameter)
Diameter = 288.5
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