Orbital Diagram for Nitrogen
In chemistry orbital hybridisation or hybridization is the concept of mixing atomic orbitals to form new hybrid orbitals with different energies shapes etc than the component atomic orbitals suitable for the pairing of electrons to form chemical bonds in valence bond theoryFor example in a carbon atom which forms four single bonds the valence-shell s orbital combines. According to Hunds rule electrons fill all orbitals of equal energy with one electron before pairing electrons. See The Electron Configuration Diagrams For Atoms Of The Elements Electron Configuration Atom Diagram Element Chemistry That means that for carbon the two electrons in the 2p subshell would not occupy the same orbital. . To figure out the configuration on your own you can follow the orbital diagram to map out which shells will be filled first.