CHEM 001B Lecture Notes - Lecture 4: Polycyclic Aromatic Hydrocarbon, Molecular Orbital Diagram, Diamagnetism
Document Summary
Valence bond theory describes a covalent bond as the overlap of half-filled atomic orbitals (each containing a single electron) that yield a pair of electrons shared between the two bonded atoms. The overlap of two s orbitals (as in h 2 ), the overlap of an s orbital and a p orbital (as in hcl), and the end-to-end overlap of two p orbitals (as in cl 2 ) all produce sigma bonds. A pi bond is a type of covalent bond that results from the side-by-side overlap of. Hybridization: mixing of atomic orbitals to generate new sets of equivalent orbitals that form covalent bonds with other atoms. Methods of drawing larger (more than one central atom) molecules: Lewis structure : shows all the bonds and the lone pairs in the molecule. Kekule structures : shows all the bonds but omits the lone pairs. Condensed structure : does not use bonds but uses subscripts to indicate the.
