Answer to Question #152197 in Physical Chemistry for Ra

Question

The edge length of a cubic unit cell is 5.63×10⁻¹⁰m. To find the distance between (111)planes.

Answer 1

$d_{hkl}=\frac{a}{\sqrt{h^2+k^2+l^2}}$

$d_{111}=\frac{5.63*10^{-10}}{\sqrt{1^2+1^2+1^2}}=3.25*10^{-10}$