Determine the bond order of each member of the following groups, and determine which member of each

group is predicted by the molecular orbital model to have the strongest bond.

(a) $\mathrm{H}_{2}, \mathrm{H}_{2}^{+}, \quad \mathrm{H}_{2}-$

(b) $\mathrm{O}_{2}, \mathrm{O}_{2}^{2+}, \quad \mathrm{O}_{2}^{2-}$

(c) $\mathrm{Li}_{2}, \mathrm{Be}_{2}^{+}, \quad \mathrm{Be}_{2}$

(d) $\mathrm{F}_{2}, \mathrm{F}_{2}+, \quad \mathrm{F}_{2}-$

(e) $\mathrm{N}_{2}, \mathrm{N}_{2}^{+}, \quad \mathrm{N}_{2}^{-}$