2006-11-26 13:08:15 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Valence Shell Electron Pair Repulsion theory (VSEPR) is a set of rules whereby the chemist may predict the shape of an isolated molecule. It is based on the premise that groups of electrons surrounding a central atom repel each other, and that to minimize the overall energy of the molecule, these groups of electrons try to get as far apart as possible. Groups of electrons can refer to electrons that participate in a bond (single, double, or triple) to another atom, or to non-bonding electrons (e.g. lone pair electrons).
2006-11-26 13:17:04 · answer #1 · answered by phil o 1 · 1⤊ 0⤋
Valence Shell Electron Pair Repulsion
The idea that a pair of e- in any valence orbital will feel some electrical repulsion to each other. This will cause the orbital (thus the geometry) of the molecule to shift slightly.
A pair of e- that are not shared between two nuclei will repel each other more because they only feel the pull of one positive nucleus. A shared pair of e- between two nuclei do not repel each other as much and there is not as much distortion of the orbital.
2006-11-26 21:13:26 · answer #2 · answered by physandchemteach 7 · 1⤊ 0⤋
its always easier to understand thing if no acronyms are used. Valence shell electron pair repulsion theory, the name is self explanatory.
2006-11-26 21:17:48 · answer #3 · answered by tony200423man 2 · 1⤊ 0⤋
repulsion of paired electrons
2006-11-26 21:12:06 · answer #4 · answered by Nick F 6 · 1⤊ 0⤋