Assertion: protactinium's number | /r/CapableOf | determine the element
Facets:
Source sentences:
text: The number of protons determines the element, but the number of neutrons in the atom of any one element can vary.
text: The number of protons determines the element, but the number of neutrons in the atom of any one element can vary.
text: The number of protons determines the element, but the number of neutrons in the atom of any one element can vary.