The bond order in $N_2^ + $ ion is

Which of the following is paramagnetic ?

Explain $\mathrm{H}_{2}$ molecule by molecular orbitals theory.

The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals

$A$. have the same energy

$B$. have the minimum overlap

$C$. have same symmetry about the molecular axis

$D$. have different symmetry about the molecular axis

Choose the most appropriate from the options given below:

Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them