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CsBr has bcc structure with edge length ...

`CsBr` has `bcc` structure with edge length of `43 pm`. The shortest interionic distance between cation and anion is

A

3.72 pm

B

1.86 pm

C

7.44 pm

D

4.3 pm

Text Solution

Verified by Experts

Boy diagonal ` = sqrt(3)a = 2r_(Ca^(+))+ 2r_(Br^(-)) rArr r_(Ca^(+)) + r_(Br^(-)) = (sqrt(3)a)/(2)`
Distance between `Cs^(oplus) and Br^(oplus) ` is
`("Body diagonal")/(2) = (sqrt(3a))/(2) = (sqrt(3) xx 43)/(2) = 3.724`
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