Assertion: protactinium | /r/HasAspect | 27 isotopes
Facets:
value: with mass numbers
type: OTHER
value: in the range of 212pa
type: LOCATION
value: to 238pa
type: TEMPORAL
Source sentences:
text: Isotopes: Protactinium has 27 isotopes whose half-lives are known, with mass numbers 212 to 238.
text: Protactinium has around 27 isotopes with mass numbers in the range of 212Pa to 238Pa.
text: It has 27 isotopes with mass numbers ranging from 212 to 238 out of which protactinium-231 is the most stable one with a half-life of 3.276 x 104 years.