NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

[skip navigation] National Institute of Standards and Technology NIST Physical Measurement Laboratory Thallium (Tl) 

Homepage - IntroductionFinding listSelect element by name.Select element by atomic number.Select element from periodic tableThallium Atomic DataThallium Strong LinesThallium Neutral Atom Persistent Lines Thallium Neutral Atom Energy LevelsThallium Singly Ionized Persistent LinesThallium Singly Ionized Energy LevelsThallium References
Switch to Formatted Version

Atomic Data for Thallium (Tl)

Atomic Number = 81

Atomic Weight = 204.3833

Reference E95


Isotope    Mass        Abundance Spin Mag Moment

203Tl      202.972320  29.52%    1/2  +1.6223
205Tl      204.974401  70.48%    1/2  +1.6382

 
Tl I  Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p  2P1/2
      Ionization energy  49265.91 cm-1 (6.108194 eV)   Ref. BC85
 
Tl II Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d106s2  1S0
      Ionization energy  164765 cm-1 (20.4283 eV)   Ref. M58