Assertion: nitrogen's isotope | /r/HasProperty | stable
Facets:
Source sentences:
text: Natural nitrogen ( 7 N) consists of two stable isotopes: the vast majority (99.6%) of naturally occurring nitrogen is nitrogen-14, with the remainder being nitrogen-15.
text: Nitrogen has two stable isotopes: 14N and 15N.
text: Nitrogen also has stable isotopes, such as N-14 and N-15.