Assertion: bismuth | /r/HasProperty | radioactive
Facets:
value: slightly
type: DEGREE
value: with a half-life
type: OTHER
Source sentences:
text: In the opening paragraph it says that bismuth is non radioactive, then that it is radioactive.
text: In the opening paragraph it says that bismuth is non radioactive, then that it is radioactive.
text: From the same energetic calculation which caused nuclear chemists to suspect that bismuth was slightly radioactive, each of these nuclides should be exothermic to alpha decay with very long half-lives.
text: Not until 2003 was this demonstrated when researchers at the Institut d'Astrophysique Spatiale in Orsey, France, measured the Alpha emmission half-life of 209Bi to be 19 x 1018 years, meaning that Bismuth is very slightly radioactive, with a half-life over a billion times longer than the current estimated age of the universe.