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A solid AB has NaCl structure. If the ra...

A solid `AB` has `NaCl` structure. If the radius of the cation `A` is `100` pm, what is the radius of anion `B`?

A

241 pm

B

414 pm

C

225 pm

D

`44.4` pm

Text Solution

Verified by Experts

The correct Answer is:
A
As in Na Cl, `Cl^(-)` ions are arranged in ccp and `Na^(+)` ions occupy octahedral voids and radius of octahedral void `=0.414` R i.e.,
`r_(A+)=0.414r_(B-)`
or `r_(B-)=(100)/(0.414)=214` pm.
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