Problem: What is the bond order for H2- (hint: use MO theory)?A. 0.5 B. 1 C. 3 D. 2 E. 1.5

Calculate for the bond order of H₂^- using the MO theory and formula for bond order

Step 1: Calculate the total number of valence electrons present.

Step 2: Draw the molecular orbital diagram.

Step 3: Calculate the bond order of the molecule/ion. Recall that the formula for bond order is:

$\boxed{\mathbf{B}\mathbf{.}\mathbf{O}\mathbf{.}\mathbf{ }\mathbf{=}\mathbf{ }\frac{\mathbf{1}}{\mathbf{2}}\left[{\mathbf{e}}^{\mathbf{-}}\mathbf{ }\mathbf{in}\mathbf{ }\mathbf{bonding}\mathbf{ }\mathbf{MO}\mathbf{ }\mathbf{-}\mathbf{ }{\mathbf{e}}^{\mathbf{-}}\mathbf{ }\mathbf{in}\mathbf{ }\mathbf{antibonding}\mathbf{ }\mathbf{MO}\right]}$