In which of the following pairs molecules have bond order three and are isoelectronics
$C{N^ - }$, $CO$
$N{O^ + },\,\,C{O^ + }$
$C{N^ - }$, $O_2^ + $
$CO,$ $O_2^ + $
The molecular orbital configuration of a diatomic molecule is
$\sigma \,\,1{s^2}\,\,{\sigma ^*}\,\,1{s^2}\,\sigma \,\,2{s^2}\,{\sigma ^*}\,2{s^2}\,\,\sigma \,2p_x^2\,\left\{ {{}_{\pi \,2p_z^2}^{\pi \,2p_y^2}} \right.$
Its bond order is
The paramagnetic nature of oxygen molecule is best explained on the basis of
Bond order of $C_2$ vapour is :
The total number of species from the following in which one unpaired electron is present, is . . . . . . $\mathrm{N}_2, \mathrm{O}_2, \mathrm{C}_2^{-}, \mathrm{O}_2^{-}, \mathrm{O}_2^{2-}, \mathrm{H}_2^{+}, \mathrm{CN}^{-}, \mathrm{He}_2^{+}$
Write the important conditions required for the linear combination of atomic orbitals to form molecular orbitals.