Current Attempt in Progress

Calculate the energy $($in eV$/$atom$)$ for vacancy formation in some metal, M $,$ given that the equilibrium number of vacancies at $457C$ is

$9\mathrm{.}19{10}^{23}{m}^{-3}.$ The density and atomic weight $($at $457C)$ for this metal are $14\mathrm{.}0\frac{g}{c}{m}^3$ and $37\mathrm{.}50\frac{g}{m}ol,$ respectively.

$Q_v=$

eV$/$atom