Question

Copper has face centered cubic (fcc) lattice with interatomic spacing equal to 2.54 A. The value of lattice constant for this lattice is

Answer 1

Answer :- 3.59 Å

Consider the lattice parameter as a. Let r be intra atomic spacing.

Since we have face centered cubic here :-

a = √2 x r

In the given question , r = 2.54 Å

a = √2 x 2.54 Å

a = 3.59 Å

Hence the value of lattice constant for this lattice is 3.59 Å.

Answer 2

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