Molecular orbital

In chemistry, a molecular orbital is a mathematical function describing the location and wave-like behavior of an electron in a molecule. This function can be used to calculate chemical and physical properties such as the probability of finding an electron in any specific region. The terms atomic orbital and molecular orbitalPrior to Mulliken, the word "orbital" was used only as an adjective, for example "orbital velocity" or "orbital wave function." Mulliken used orbital as a [[noun, when he suggested the terms "atomic orbitals" and "molecular orbitals" to describe the electronic structures of polyatomic molecules.}} were introduced by Robert S. Mulliken in 1932 to mean one-electron orbital wave functions.{{cite journal