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The density of KBr is "2.75 g/cm"^3 and ...

The density of KBr is `"2.75 g/cm"^3` and edge length of unit cell is 654 pm (K=39 , Br=80) then what are the features of this unit cell ?

A

It has bcc unit cell

B

There are two constituents per unit cell

C

Unit cell constituted by anion is fcc

D

Structure is similar to ZnS.

Text Solution

Verified by Experts

The correct Answer is:
C
`z=(a^(3)xx d xx N_(A))/(M)=((654xx10^(-10))^(3)xx2.75xx6.023xx10^(22))/(119)=4`
Hence (C ) is correct choice.
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