Assertion: natural hafnium | /r/MadeOf | five stable isotopes
Facets:
value: with mass numbers
type: OTHER
Source sentences:
text: Natural hafnium ( 72 Hf) consists of five stable isotopes (176Hf, 177Hf, 178Hf, 179Hf, and 180Hf) and one very long-lived radioisotope, 174Hf, with a half-life of 2×1015 years.
text: Natural hafnium consists of six stable isotopes with mass numbers 174 and 176-80.
text: Natural hafnium ( 72 Hf) consists of five stable isotopes (176Hf, 177Hf, 178Hf, 179Hf, and 180Hf) and one very long-lived radioisotope, 174Hf, with a half-life of 2×1015 years.