ABSTRACT
The three-dimensional shape of a complete molecule, termed the molecular geometry, is based on the arrangement of all electron pairs around each central atom in a complete molecule. Electron regions repel each other; the distribution of electron regions around a central atom is based on the fact that electron regions will occupy positions around a central atom that allow them to be as far away from each other as possible. This concept is termed the Valence Shell Electron Pair Repulsion theory. Atom geometry describes the shape of the bonded atoms around a central atom. Atom geometry must be derived from electron region geometry. Molecular polarity measures the total vector sum of all bond polarities in a complete molecule; this is termed the molecular dipole moment. The dipole moment is proportional to the strength of each individual bond dipole and to the direction of each bond dipole distributed around a central atom.
