Answer to Question #226910 in Physical Chemistry for jhgefdgdfgd

Question

Molybdenum forms body-centered cubic crystals and at 20 oC the density is 10.3 g/mL. Calculate the distance between the centers of the nearest molybdenum atoms.

Answer 1

Density = Z × M / N × a³.

Z is effective number of atoms for Molybdenum (Mo). = 2 .

M is Molar mass of Mo = 95.95 g/ mol.

N = 6.02 × 10²³.

a is edge length in Cm .

Putting all Value

d = 10.3 g / cm^3.

M = 95.95 g/ mol.

N = 6.02 × 10²³.

Then find "a" from above formula .

a = 3.16 × 10^-8 Cm.

This is edge length and minimum distance between center of Mo .