According to molecular
Question:

According to molecular orbital theory, which of the following will not be a viable molecule ?

1. $\mathrm{He}_{2}^{+}$

2. $\mathrm{H}_{2}^{-}$

3. $\mathrm{H}_{2}^{2-}$

4. $\mathrm{He}_{2}^{2+}$

Correct Option: , 3

Solution: