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If at 100^@C temperature copper possess ...

If at `100^@C` temperature copper possess fcc arrangements. Edge length is xÅ . Then find out approximate density `("g/cm"^3)` of Cu at this temperature. (Atomic weight of Cu = 63.55 u) 

A

`105/(x^3)`

B

`211/(x^3)`

C

`205/(x^3)`

D

`422/(x^3)`

Text Solution

Verified by Experts

The correct Answer is:
D
For fcc unit cell, Z = 4
`therefore D = (63.5 xx 4)/(6 xx 10^(23) xx x^3 xx 10^(-24)) "g/cm"^3`
`therefored = (63.5 xx 4 xx 10)/(6) "g/cm"^3`.
`therefore d = (423.33)/(x^3) = 422/(x^3)`.
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