According to molecular orbital theory, which of the following is true with respect to \(Li_2^ +\) and \(Li_2^ -\)?
1
Both are unstable
2
\(Li_2^ + {\rm{\;is\;unstable\;and\;}}Li_2^ - \) is stable
3
\(Li_2^ + {\rm{\;is\;stable\;and\;}}Li_2^ -\) is unstable
4
More than one of the above
5
None of the above