What is the bond angle of sp2 hybridization?

The bond angle of sp² hybridization is approximately 120 degrees.

This hybridization occurs when one s orbital and two p orbitals mix to form three equivalent sp² hybrid orbitals. These orbitals are arranged in a trigonal planar geometry around the central atom, which results in the 120-degree bond angles between them.

For example, in molecules like ethene (C₂H₄) and boron trifluoride (BF₃), the central atoms are sp² hybridized. The trigonal planar arrangement minimizes electron pair repulsions according to VSEPR theory, leading to the characteristic bond angles associated with sp² hybridization.