Atomic Orbital: An atomic orbital is a mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom.
Bonding Orbital: A bonding orbital is a molecular orbital that has lower energy and greater stability than the atomic orbitals from which it was formed, often leading to the formation of a chemical bond between atoms.
Antibonding Orbital: An antibonding orbital is a type of molecular orbital that occurs when atomic orbitals combine in such a way that leads to increased energy and decreased stability, often working against bond formation between atoms