Ion
No. of levels
H I
106
Total for H:
106
D I
78
Total for D:
78
T I
10
Total for T:
10
![[skip navigation]](/Images/dot_t.gif){kind=small}
![[ASD Home]](https://physics.nist.gov/PhysRefData/ASD/Images/ASD-sm.gif "ASD Home"){kind=small}
![[Lines Query]](https://physics.nist.gov/PhysRefData/ASD/Images/Lines.gif "Lines Query"){kind=small}
![[Levels Query]](https://physics.nist.gov/PhysRefData/ASD/Images/Levels.gif "Levels Query"){kind=small}
![[List of Spectra]](https://physics.nist.gov/PhysRefData/ASD/Images/List.gif "List of Spectra"){kind=small}
![[Ground States and Ionization Energies]](https://physics.nist.gov/PhysRefData/ASD/Images/GS-IE.gif "Ground States and Ionization Energies"){kind=small}
![[Bibliography]](https://physics.nist.gov/PhysRefData/ASD/Images/Bib.gif "Bibliography"){kind=small}
![[Help]](https://physics.nist.gov/PhysRefData/ASD/Images/Help.gif "Help"){kind=small}
