NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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Homepage - IntroductionFinding listSelect element by name.Select element by atomic number.Select element from periodic tableHafnium Atomic DataHafnium Strong LinesHafnium Neutral Atom Persistent Lines Hafnium Neutral Atom Energy LevelsHafnium Singly Ionized Persistent LinesHafnium Singly Ionized Energy LevelsHafnium References
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Atomic Data for Hafnium (Hf)

Atomic Number = 72

Atomic Weight = 178.49

Reference E95


Isotope    Mass        Abundance Spin Mag Moment

176Hf      175.941406  5.21%     0    
177Hf      176.943217  18.6%     7/2  +0.7935
178Hf      177.943696  27.30%    0    
179Hf      178.945812  13.63%    9/2  -0.6409
180Hf      179.946545  35.10%    0    

 
Hf I  Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d26s2  3F2
      Ionization energy  55047.9 cm-1 (6.82507 eV)   Ref. CHR88b
 
Hf II Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d6s2  2P°3/2
      Ionization energy  120000 cm-1 (15 eV)   Ref. M58