Assertion: technetium's isotope | /r/HasProperty | longest-lived
Facets:
value: longest
type: DEGREE
Source sentences:
text: Its longest-lived isotope is Tc 98 with a half-life of 4,200,000 years.
text: Technetium has three long-lived radioactive isotopes: 97Tc (T1/2 = 2.6 x 106 years), 98Tc
text: Its longest-lived isotope is Tc 98 with a half-life of 4,200,000 years.