Hafnium (Hf)
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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