Which of the following has the minimum bond length ?
$O_2^+$
$O_2^-$
$O_2^{2-}$
$O_2$
The bond order of $He_2^ + $ molecule ion is
The hybridizations of atomic orbitals of nitrogen in $NO_2^+, NO_3^-$ and $NH_4^+$ respectively are
Which of the following molecular orbital has two nodal planes
$AX$ is a covalent diatomic molecule where $A$ and $X$ are second row elements of periodic table. Based on Molecular orbital theory, the bond order of $AX$ is $2.5$. The total number of electrons in $AX$ is ........... (Round off to the Nearest Integer).
${{\rm{H}}{{\rm{e}}_2}}$ molecule is not possible.