Sum of bond order of $\mathrm{CO}$ and $\mathrm{NO}^{+}$is____________.

Number of molecules having bond order $2$ from the following molecule is. . . . . . .  $\mathrm{C}_2, \mathrm{O}_2, \mathrm{Be}_2, \mathrm{Li}_2, \mathrm{Ne}_2, \mathrm{~N}_2, \mathrm{He}_2$

During the change of $O _{2}$ to $O _{2}^{-}$, the incoming electron goes to the orbital :

Bond order is a concept in the molecular orbital theory. It depends on the number of electrons in the bonding and antibonding orbitals. Which of the following statements is true about it ? The bond order

Give electron configuration, bond order, Magnetic property and energy diagram for Baron $\left( {{{\rm{B}}_2}} \right)$ Molecule and write about it existence.

Give answer of following questions.

$(i)$ Give molecular orbitals and type form by $\mathrm{LCAO}$ from $2{\rm{s}},2{{\rm{p}}_{\rm{x}}},2{{\rm{p}}_{\rm{y}}}$ and $2{{\rm{p}}_{\rm{z}}}$ 

$(ii)$ ${\rm{L}}{{\rm{i}}_2},{\rm{B}}{{\rm{e}}_2},{{\rm{C}}_2},{{\rm{N}}_2},{{\rm{O}}_2}{\rm{,}}{{\rm{F}}_2}$ for these molecule give energy other.