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A certain material has a FCC crystal structure with an atomic radius of 1.44 A° (1...

A certain material has a FCC crystal structure with an atomic radius of 1.44 A° (1 A° = 10-8 cm), and an atomic mass of 197. Calculate:

a) The lattice constant ‘a’ of unit cell in cm,

b) The atomic packing factor of the material.
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