Bonding : VSPER Theory

VSPER THEORY

• 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).

• Since the molecular geometry is determined by how many bonding and non-bonding electron groups surround the central atom, the first thing one needs to do is count how many of each there are. 

Summary VSPER table

_{keyword :
A : Central Atom.
X : Electron Domain.
E : Lone Pairs}

MUST SEE VIDEO :

This video might help you to understand VSPER theory better.

 Other VIDEO :




Some basic information on VSEPR theory and the geometry formed by electron pairs around a central atom. Discussed in this video are linear, trigonal planar, and tetrahedral arrangements.

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