Nitrogen atom orbital energies

A typical energy level diagram of inner n and n molecular orbitals of the bent azo group, N—N, in the ground state is shown in Fig. 2,a (41). Here, a 7t molecular orbital containing two electrons, as well as a vacant n orbital, result from the interaction of pz nitrogen atomic orbitals not involved in the sp2 hybridization of the N atoms. On the other hand, the n and n + molecular orbitals, each filled with two electrons, arise from interaction of sp2 nitrogen... 

N2H2 N2H + H, the (calculated) N-H bond dissociation energies (Z) ) are 435, 343 and 255 kJ mol. The dissociation of NHj leaves the odd-electron of NH2 located in a nitrogen atomic orbital. However, for each of N Hj and N H, the odd-electron may be delocalized between two nitrogen atomic orbitals, thereby leading to the development of N-N Pauling 3-electron bonds as follows ... 

The NjH and N H radicals are thereby stabilized relative to H N—NH and HN = N as dissociation products, with the odd electron located in only one nitrogen atomic orbital. Consequently, the N-H dissociation energies for... 

Although the explanation will be provided later, the configuration on the right is lower in energy than the one on the left. As we have already stated, electrons remain unpaired as long as possible. Therefore, the carbon atom that has the electron configuration Is2 2s2 2p2 has two impaired electrons. In a similar way, the nitrogen atom has three electrons in the 2p orbitals,... 

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