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Stable Hafnium Isotopes - Hf Isotopes

Nominal
mass

Accurate
mass

% Natural
abundance

Chemical
form

Enrichment
available %

¹⁷⁴ Hf	173.940044 (4)	0.16 (1)	oxide	12 - 21+

¹⁷⁶ Hf	175.941406 (4)	5.26 (7)	oxide	65 - 84+

¹⁷⁷ Hf	176.943217 (3)	18.60 (9)	oxide	85 - 94+

¹⁷⁸Hf	177.943696 (3)	27.297 (7)	oxide	92 - 96+

¹⁷⁹Hf	178.9458122 (30)	13.629 (5)	oxide	73 - 90+

¹⁸⁰ Hf	179.9465457 (30)	35.08 (16)	oxide, mental	94 - 99+

Hafnium Isotopes have several applications. Hf-180 is used for the production of the radioisotope Hf-181 while Hf-180 is used for the production of the radioisotope Ta-179, which has a medical application. The second isomer of Hf-178 (Hf-178m2) exhibits very high excitation energy and it has been suggested for use in gamma ray lasers.