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A face-centred cubic element (atomic mas...

A face-centred cubic element (atomic mass `60`) has a cell edge of `400` pm. What is its density?

A

`6.2gcm^(-3)`

B

`24.8gcm^(-3)`

C

`12.4gcm^(-3)`

D

`3.1gcm^(-3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`d(ZxxM)/(a^(3)xxN_(0))`
`=(4xx60g" mol"^(-1))/((400xx10^(-10)cm)^(3)xx(6.02xx10^(23)mol^(-1)))`
`6.2gcm^(-3)`.
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