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At 100°C, copper (Cu) has FCC unit cell structure with cell edge length of x Å. What is the approximate density of Cu (in g cm-3) at this temperature ?[Atomic Mass of Cu = 63.55u](1) 105/x3(2)107/x3(3)421/x3(4)422/x3please provide the sol fast …....the question is from solid states..........

preet kaur , 5 Years ago
Grade 11
anser 2 Answers
Arun

Last Activity: 5 Years ago

Dear student
 
d = Zm / Na^3
 
 = 4 * 63.5 /(6 * 10^23) ( x * 10^-8)^3
 
 = 421.716 /x^3
 
Hope it helps
 
Regards
Arun (askIITians forum expert)

Mayank

Last Activity: 5 Years ago

FCC unit cell Z = 4
using the formulae d=ZM/Naxa3
d =(63.5x4)/ [6x1023 ( x3) x 10-24 ]  g/cm3  = 423.33/x3=422/x3 (approx.) hence ans. is option (4)

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