Orbital Description ● Sigma bonds around the double-bonded carbon are sp2 hybridized. ·Angles are approximately12o°and the molecular geometry is trigonal planar. Unhybridized p orbitals with one electron will overlap forming the double bond (pi bond). Chapter 7 4 Chapter 7 4 Orbital Description • Sigma bonds around the double-bonded carbon are sp2 hybridized. • Angles are approximately 120ºand the molecular geometry is trigonal planar. • Unhybridized p orbitals with one electron will overlap forming the double bond (pi bond)