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CsBr crystallises in a body centred cubi...

CsBr crystallises in a body centred cubic lattice. The unit cell length is 436.6 pm. Given that the atomic mass of Cs = 133 u and that of Br = 80 u and Avogadro number being `6.023xx10^(23)"mol"^(-1)`, the density of CsBr is

A

`4.25g//cm^(3)`

B

`42.5g//cm^(3)`

C

`0.425g//cm^(3)`

D

`8.25g//cm^(3)`

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The correct Answer is:
A
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