Assertion: plutonium's life | /r/HasProperty | 87.7 years
Facets:
Source sentences:
text: Plutonium-238 is an alpha-emitting isotope that emits a negligible amount of gamma rays; it can be manufactured to harness its heat of radioactive decay to operate thermoelectric and thermionic devices that are small, lightweight, and long-lived (the half-life of plutonium-238 is 87.7 years).
text: The decay of plutonium-238 to uranium-234, and subsequent removal of this uranium, would have the opposite effect, but plutonium-238 both has a longer half-life (87.7 years vs. 14.3) and is a smaller proportion of the spent nuclear fuel.
text: The half-life of plutonium-238 is 87.7 years.
text: Half-life: 87.7 years