CHEM 214 Lecture Notes - Lecture 25: Electrostatics, Atomic Orbital, Wave Function
26 Jun 2016
School
Department
Course
Professor
Document Summary
The difference in mo configuration arise from atomic properties. Electronegativity is particularly important when we start to look at heteronuclear bonds (key concept for bonding). Fluorine has high nuclear charge (9 protons), electrons are in 2s/p orbitals. Fluorine will do lots of reactions to obtain another electron. Atoms that are not electronegative (e. g. first atom in each row) are quite willing to give up one electron. Nuclei and electrons are doing their own thing. Hence if try to write a wavefunction to describe a molecule, it cannot be treated => need to use born-oppenheimer approximation. The electrons are doing their own thing on their own much faster time scale. The electrons are such much lighter than electrons whereas nuclei (flies around elephant). Motions of the nuclei is defined by ho and rigid rotor from the basis of the quantization of nuclear motions. For the electrons: need to specify particular values of position of nuclei.
