Assertion: neptunium's isotope | /r/HasProperty | radioactive
Facets:
Source sentences:
text: All isotopes of neptunium are radioactive.
text: All three isotopes are radioactive, creating radioisotopes, with the most abundant and stable being uranium-238 with a half-life of 4.4683×109 years (close to the age of the Earth).
text: All isotopes of neptunium are radioactive.
text: Isotopes and compounds of plutonium are radioactive and accumulate in bone marrow.
text: All known isotopes of curium are radioactive and have a small critical mass for a sustained nuclear chain reaction.
text: All the isotopes are radioactive.
text: All isotopes of the metal are radioactive.
text: All isotopes of neptunium are radioactive.
text: Although all three isotopes are radioactive, only uranium-235 is a fissionable material that can be used for nuclear power.