Assertion: nitrogen | /r/HasProperty | non-metallic element
Facets:
Source sentences:
text: It is a non-metallic element that constitutes nearly four-fifths of the air by volume, occurring as a colorless, odorless, almost inert diatomic gas, N2, in various minerals and in all proteins and is a constituent of all living tissues.
text: Nitrogen, with chemical formula N2, is a non-metallic element found in the gaseous state at room temperature.