The bond order is maximum in
${O_2}$
$O_2^{ - 1}$
$O_2^{ + 1}$
$O_2^{ - 2}$
Although $CN^-$ ion and $N_2$ molecule are isoelectronic, yet $N_2$ molecule is chemically inert because of
Among the following, the paramagnetic compound is
Which of the following is paramagnetic ?
The internuclear distances in $O -O$ bonds for $O_2^+ ; O_2 , O_2^-$ and $O_2^{2-}$ respectively are
During change of $O_2$ to $O_2^-$ ion, the electron adds on which one of the following orbitals