Coulomb blockade is a phenomenon in which the flow of electrons through a nanostructure, such as a quantum dot or a single-electron transistor, is restricted due to the electrostatic repulsion between ...

The PT can be used to help us know what orbitals are involved in the bonding: Nitrogen: 2s and 2p (more lone pair repulsion but greate orbital overlap, favours N=N double bond over single bonds).