A group of researchers from Ehime University investigated valence electron configurations using light, expanding on prior studies of superconductors and quantum spin liquids. The findings were ...

Look at electron configuration of nitrogen v. phosphorous (image of box/arrow diagrams of electron configurations). 1s2 2s2 2p3 v. 1s2 2s2 2p6 3s2 3p3 - phosphorous has vacant 3d orbitals that can be ...