Question

the metal calcium crystalizes in a FCC unit cell with a=0.556nm calculate the density of the metal (i) it cotains 0.42% Frenkel (ii)it contains 0.7% Schottky defect​

Answer 1

Explanation:

given that:-

a=0.556nm ,rank of FCC unit cell=4

Avogadro's number=6.022×10^-23

and atomic mass=molecular mass/Avogadro no.

molecular mass=atomic mass×avogadro number.

and,we know that:-

density=(rank×molecular mass)/(volume×NA)

then we putting the value of all right hand unit(elements).

then we get the answer of density.

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