Valence bond theory is a chemical model that describes the interaction between atoms and the forces that create chemical bonds. According to this framework, atoms form molecules by sharing or transferring their valence electrons, which are the electrons located in the outermost energy shell. The theory posits that chemical bonds are formed by the overlap of atomic orbitals belonging to different atoms, allowing for the sharing of electron pairs between them. This localized sharing of electrons is what stabilizes the resulting molecular structure. The prediction of bond types, bond angles, and overall molecular geometry is based on minimizing the repulsive forces between these electron pairs, providing a method for predicting the stability and characteristics of compounds.