
Both \(C_1\) and \(C_2\) are \(sp ^3\) hybridized.

\(C_1\) is \(sp ^3\) hybridized, while \(C_2\) and \(C_3\) are \(sp ^2\) hybridized.

Both \(C_1\) and \(C_2\) are \(sp ^3\) hybridized.

\(C_1\) is \(sp ^3\) hybridized and \(C_2\) is \(sp ^2\) hybridized.

\(C_1\) is \(sp ^3\) hybridized and \(C_2\) is \(sp ^2\) hybridized.
Regarding the molecular orbital (MO) energy levels for homonuclear diatomic molecules, the INCORRECT statement(s) is (are):