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Q.

At 100o C, copper(Cu) has FCC unit cell structure with cell edge length xAo  . What is the approximate density of Cu(in g cm−3 ) at this temperature? [Atomic mass of Cu = 63.55 u]
 

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a

211x3

b

205x3

c

105x3

d

422x3

answer is D.

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Detailed Solution

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d=ZMNa a3 
=4×63.556.023×1023×x×10−83=422x3gm/cm3

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