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Platinum crystallize in a face centered ...

Platinum crystallize in a face centered cube crystal with a unit cell length of `3.9231 Å`. The density and atomic radius of platinum are respectively: [Atomic mass of Pt = 195]

A

`45.25 g. cm^(-3), 2.516 Å`

B

`21.53 g. cm^(-3), 1.387 Å`

C

`29.46 g. cm^(-3), 1.387 Å`

D

none of the above

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