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AB crystallizes in a body centred cubic ...

`AB` crystallizes in a body centred cubic lattice with edge length `a` equal to `387p m` .The distance between two oppositely charged ions in the lattice is :

A

300 pm

B

335 pm

C

250 pm

D

200 pm

Text Solution

Verified by Experts

The correct Answer is:
B
If a molecule AB has bcc lattice then cation (or anion) is at the body centre and anions (or cations) are at the corners. So, the distance between cation and anion is-
`= sqrt(3) a//2 = (sqrt(3) xx 387)/2 = 335`pm
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