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An element X having vapour density equal...

An element X having vapour density equal to 40 in gaseous state undergoes crystal formation at low temperature in FCC pattern. Number of unit cells in `1280 g` of X is represented by `nxxN_(A).` Then the value of 'n' is:

A

`1`

B

`2`

C

`3`

D

`4`

Text Solution

Verified by Experts

The correct Answer is:
D
`M.wt=80`
No. of unit cells `=(1280)/(80xx4)=4`
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