As the interactions between atoms are governed by the valence electrons, their findings shine light on the fundamental nature of chemical bonds, with implications for pharmacy and chemical ...

1s2 2s2 2p3 v. 1s2 2s2 2p6 3s2 3p3 - phosphorous has vacant 3d orbitals that can be used in bonding - 'expanded valence shell.' The exact science is still uncertain. The PT can be used to help us know ...