Assertion: actinium's isotope | /r/HasProperty | stable
Facets:
value: practically
type: DEGREE
value: for all purposes
type: PURPOSE
Source sentences:
text: Actinium has no stable isotopes.
text: Some isotopes are stable, but most are not.
text: Actinium ( 89 Ac) has no stable isotopes and no characteristic terrestrial isotopic composition, thus a standard atomic weight cannot be given.
text: All these isotopes are stable and are also present in nature as primordial nuclides, but their excess amounts in comparison with lead-204 (which has only a primordial origin) can be used in the technique of uranium-lead dating to date rocks.
text: Some isotopes are stable, but most are not.
text: Actinium ( 89 Ac) has no stable isotopes and no characteristic terrestrial isotopic composition, thus a standard atomic weight cannot be given.
text: All but two elements up to bismuth (element 83) have an isotope that is practically stable for all purposes ("classically stable"), with the exceptions being technetium and promethium (elements 43 and 61).
text: Some isotopes are stable, but most are not.
text: Some isotopes are stable, but most are not.