Assertion: neptunium | /r/CapableOf | add second proton
Facets:
value: to the nucleus
type: TRANSITIVE-OBJECT
Source sentences:
text: But neptunium 239 is also unstable and soon generates another electron, adding a second proton to the nucleus to become plutonium.
text: But neptunium 239 is also unstable and soon generates another electron, adding a second proton to the nucleus to become plutonium.