Do double bonds affect bond angle?

1 Answer

Yes, the bond angle will be affected due to a different hybridization on the atoms.

Explanation:

A double bond involves a sigma bond and a pi bond. The pi bond is between pi orbitals of adjacent atoms in a molecule. Because of the acquisition of these additional orbitals, the hybridization must change.

In CH3CH3, the carbons have a hybridization of sp3, resulting in a tetrahedral structure.

In CH2=CH2, the carbons have a hybridization of sp2, resulting in trigonal planar structure.

Tetrahedral and trigonal planar molecular structures have different bond angles.