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.
Solution
Density = Z "\\times" "\\frac {M}{N}" "\\times{l^3}"
Z is effective number of atoms for Molybdenum (Mo). = 2 .
M is Molar mass of Mo = 95.95 g/ mol.
N = 6.02 × 1023.
L is edgelength in Cm .
d = 10.3 g / "cm^3."
M = 95.95 g/ mol.
N = "6.02 \u00d7 10^{23}"
Make L subject of the formula
L = 3.16 × 10-8 Cm.
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