Hybrid orbitals. Post author By Miraj Ahmad Ansari Post date December 2, 2020 GATE CHEMISTRY Structure Hybrid orbitals. Lesson Progress 0% Complete Previous Topic Back to Lesson Next Topic ← Atomic units. Molecular structure and Chemical bonding: Born-Oppenheimer approximation;Valence bond theory and linear combination of atomic orbitals – molecular orbital (LCAO-MO) theory. → Applications of LCAO-MO theory to H2+, H2; orbital theory (MOT) of homo- and heteronuclear diatomic molecules.