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The edge length of a face centred cubic ...

The edge length of a face centred cubic cell of an ionic substance is `508` pm .If the radius of the cation is 110 pm the radius of the anion is ----------- pm

A

288pm

B

398pm

C

618pm

D

144pm

Text Solution

Verified by Experts

The correct Answer is:
4
For an ionic substance in FCC arrangment ,
`2(r^(+)+r^(-))=` edge length
`2(1 10+r^(-))`=508, `r^(-)=144` pm
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