`CsBr` crystallises in a body`-` centred cubic lattice. The unit cell length is `436.6 p m`. Given that `:` the atomic mass of `Cs=133` and that of `Br=80 am u` and Avogadro's number being `6.02xx10^(23)mol^(-1)`, the density of `CsBr` is `:`

Options

A. `42.5 g//cm^(3)`
B. `0.425g//cm^(3)`
C. `8.25g//cm^(3)`
D. `4.25g//cm^(3)`

Answer

D