Question

Based on M.O.T, explain the electronic configuration of the Hydrogen molecule and $B{e}_2$.

Answer 1

Hydrogen molecule($H_2$) :- 2 electrons

electronic configuration :- $\sigma 1s^2$

It is diamagnetic because it has no unpaired electons

$B{e}_2$ :- 8 electrons

Electronic configuration :- $\sigma {1s}^2{\sigma }^{\ast }1s^2\sigma 2s^2{\sigma }^{\ast }2s^2$

It is also dimagnetic as it has no unpaird electrons.