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The edge length of a face centred unit c...

The edge length of a face centred unit cubic cell is 508 pm. If the radius of cation is 110 pm, the radius of anion will be

A

110 pm

B

220 pm

C

285 pm

D

144 pm

Text Solution

Verified by Experts

The correct Answer is:
D
For fcc,
`2(r_(+)+r_-)=a`
`2(110+r_(-))`=508
`r_(-)=508/2-110`=144 pm
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