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Solid A^(+)B^(-) has a bcc structure .If...

Solid `A^(+)B^(-)` has a bcc structure .If the distance of closest apporach between two atoms is 173 pm ,the edge length of the cell is:

A

200 pm

B

`sqrt(3)//sqrt(2)` pm

C

`142.2` pm

D

`sqrt(2)` pm

Text Solution

Verified by Experts

The correct Answer is:
A
For bcc, d `=(sqrt(3))/(2)a`
or `a=(2d)/(sqrt(3))=(2xx173)/(1.732)=200` pm
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