Ion
No. of levels
N I
381
N II
197
N III
347
N IV
292
N V
151
N VI
148
N VII
149
Total for N:
1665
![[skip navigation]](/Images/dot_t.gif){kind=small}
![[ASD Home]](https://pml.nist.gov/PhysRefData/ASD/Images/ASD-sm.gif "ASD Home"){kind=small}
![[Lines Query]](https://pml.nist.gov/PhysRefData/ASD/Images/Lines.gif "Lines Query"){kind=small}
![[Levels Query]](https://pml.nist.gov/PhysRefData/ASD/Images/Levels.gif "Levels Query"){kind=small}
![[List of Spectra]](https://pml.nist.gov/PhysRefData/ASD/Images/List.gif "List of Spectra"){kind=small}
![[Ground States and Ionization Energies]](https://pml.nist.gov/PhysRefData/ASD/Images/GS-IE.gif "Ground States and Ionization Energies"){kind=small}
![[Bibliography]](https://pml.nist.gov/PhysRefData/ASD/Images/Bib.gif "Bibliography"){kind=small}
![[Help]](https://pml.nist.gov/PhysRefData/ASD/Images/Help.gif "Help"){kind=small}
