It says that electron pairs, being composed of negatively charged particles, repel each other to get as far away from each other as possible. The basic idea in molecular shapes is called valence shell electron pair repulsion (VSEPR). Small molecules-molecules with a single central atom-have shapes that can be easily predicted.
There is an abundance of experimental evidence to that effect-from their physical properties to their chemical reactivity.
Determine the shape of simple molecules.
