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The unit cell of aluminium is a cube wi...

The unit cell of aluminium is a cube with an edge length of 405 pm. The density of aluminium is `2.70 g cm^(-3)` . What type of unti celll of alluminium is ?

A

Body centred cubic cell

B

Face-centred cubic cell

C

End-centred cubic cell

D

Simple cubic cell

Text Solution

Verified by Experts

The correct Answer is:
B
`d=(ZxxM)/(N_AxxV) rArr 2.70 =(Zxx27)/(6.023xx10^23 xx(405xx10^(-10))^3)`
Z=4
Hence , structure of aluminium unit cell is fcc or face-centred
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