The concept that electron pairs located in the valence shell of an atom bonded to other atoms tend to stay as far apart as possible so as to minimize repulsions between them is incorporated in the

valence shell electron pair conversion theory (VSEPR)

Explanation:

The theory of the repulsion of the electronic pairs of the valence layer (VSEPR) Unlike the ionic bond, the covalent bond is directional. The shape of a molecule explains an essential part of its properties. The theory of the repulsion of the electronic pairs of the valence layer (VSEPR) makes a simple addition to Lewis's ideas that allows us to foresee the shape of a given molecule: “The electronic pairs repel each other, so that they place as far as possible from each other. ”

ammonium chloride & tallow