Question

The total number of electrons in all bonding molecular orbitals of $O_2^{2-}$ is
(Round off to the Nearest Integer).

Answer 1

$O_2^{2-}$
$\sigma 1s^2,{\sigma }^{\ast }1s^2,\sigma 2s^2,{\sigma }^{\ast }2s^2,\sigma 2p_z^2,\pi 2p_x^2=\pi 2p_y^2,{\pi }^{\ast }2p_x^2={\pi }^{\ast }2p_y^2$
Total number of electrons in bonding molecular orbitals is $=10$