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A solid has BCC structure. If the distan...

A solid has BCC structure. If the distance of closest approach between the two atoms is 1.73 A. The edge length of unit 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
`2r = (sqrt(3)a)/2 = 1.73 overset(@)A`
`a = (2 xx 1.73 overset(@)A)/sqrt(3) = 200` pm
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