Assertion: protactinium's isotope | /r/AtLocation | two different energy states
Facets:
Source sentences:
text: 231Pa and 234Pa, with the isotope 234Pa occurring in two different energy states.
text: 231Pa and 234Pa, with the isotope 234Pa occurring in two different energy states.
text: 231Pa and 234Pa, with the isotope 234Pa occurring in two different energy states.