Assertion: uranium's isotope | /r/HasProperty | unstable
Facets:
Source sentences:
text: Uranium is weakly radioactive because all isotopes of uranium are unstable; the half-lives of its naturally occurring isotopes range between 159,200 years and 4.5 billion years.
text: All three naturally-occurring isotopes of uranium (238U, 235U and 234U) are unstable.
text: Some isotopes such as those of uranium are unstable and release atomic particles as they disintegrate into less complex forms.
text: All three naturally-occurring isotopes of uranium (238U, 235U and 234U) are unstable.
text: All isotopes of uranium are unstable and radioactive, but uranium 238 and uranium 235 have half-lives which are sufficiently long to have allowed them to still be present in the Solar System and indeed on Earth.
text: Uranium is weakly radioactive because all its isotopes are unstable.
text: In its elementary state uranium is only weakly radioactive due to its unstable isotopes, which vary naturally.