Density of a face centre cubic …
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Yogita Ingle 5 years, 4 months ago
There are 4 atoms per unit cell of lattice
Density = mass / volume
= 4× mass of each atom/ a3 , where a side of cubic unit cell
= 4× 60.2 × 1.66 × 10 -24 / a3 as atomic mass = 1.66× 10 -24 g
= 6.25 g/cm3 given
so a3 = 4×60.2 × 1.66 ×10-24 / 6.25 cm3
Gives a3 = 6.39 × 10 -23 cm3 = = 63.9× 10 -24
Find a from here
a = 3.93x 10 -8 cm
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