NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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

Homepage - IntroductionFinding listSelect element by name.Select element by atomic number.Select element from periodic tablePromethium Atomic DataPromethium Strong LinesPromethium Neutral Atom Persistent Lines Promethium Neutral Atom Energy LevelsPromethium Singly Ionized Persistent LinesPromethium Singly Ionized Energy LevelsPromethium References
Switch to Formatted Version

Atomic Data for Promethium (Pm)

Atomic Number = 61

Atomic Weight = 145

Reference E95


Isotope    Mass        Abundance Spin Mag Moment

145Pm      144.912743  0         5/2  
146Pm      145.914708  0         3    
147Pm      146.915135  0         7/2  +2.7
149Pm      148.918332  0         7/2  ±3.3
151Pm      150.921203  0         5/2  ±1.8

 
Pm I  Ground State (1s22s22p63s23p63d104s24p64d105s25p6)4f56s2  6H°5/2
      Ionization energy  45020 cm-1 (5.582 eV)   Ref. WSPC78
 
Pm II Ground State (1s22s22p63s23p63d104s24p64d105s25p6)4f56s  7H°2
      Ionization energy  87900 cm-1 (10.90 eV)   Ref. SR65