For a given crystal, the lattice parameter ‘$a$’ is 318 pm. The $d$-spacing for a (III) plane is

Question

Dr. Abubacker · Accepted Answer

(b)
$d_{hkl} = \frac{a}{\sqrt{h^{2} + k^{2} + l^{2}}}$
$d_{(111)} = \frac{a}{\sqrt{(1)^{2} + (1)^{2} + (1)^{2}}}$
$= \frac{a}{\sqrt{3}}$
$d_{(111)} = \frac{318}{\sqrt{3}} = 184\ pm$

Q. For a given crystal, the lattice parameter ‘$a$’ is 318 pm. The $d$-spacing for a (III) plane is

Explanation

Reviewed by Dr. Abubacker

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