NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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

Homepage - IntroductionFinding listSelect element by name.Select element by atomic number.Select element from periodic tableEuropium Atomic DataEuropium Strong LinesEuropium Neutral Atom Persistent Lines Europium Neutral Atom Energy LevelsEuropium Singly Ionized Persistent LinesEuropium Singly Ionized Energy LevelsEuropium References
Switch to Formatted Version

Atomic Data for Europium (Eu)

Atomic Number = 63

Atomic Weight = 151.965

Reference E95


Isotope    Mass        Abundance Spin Mag Moment

151Eu      150.919847  47.8%     5/2  +3.464
153Eu      152.921225  52.2%     5/2  +1.530

 
Eu I  Ground State (1s22s22p63s23p63d104s24p64d105s25p6)4f76s2  8S°7/2
      Ionization energy  45734.74 cm-1 (5.67038 eV)   Ref. NRCA00
 
Eu II Ground State (1s22s22p63s23p63d104s24p64d105s25p6)4f76s  9S°4
      Ionization energy  90700 cm-1 (11.25 eV)   Ref. SR65