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An ionic solid A^(o+)B^(Θ) crystallizes ...

An ionic solid `A^(o+)B^(Θ)` crystallizes as an fcc structure. If the edge length of cell is `508` pm and the radius of anion is 144 ppm, the radius of cation is

A

`110` pm

B

`364` pm

C

`220` pm

D

`288` pm

Text Solution

Verified by Experts

The correct Answer is:
A
For fcc, `(r_(o+) + r_(ɵ)) = a/2`
`r_(o+) + 144 "pm" = (508 "pm")/(2)`
`:. R_(o+) = 110 "pm"`
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