Hydrazine and laughing gas both contain this element found in imines, amides, and amines, as well as ammonia.
This element detected via the Kjeldahl method is double-bonded to carbon in certain compounds which react with dienes in the Aza Diels-Alder reaction. Found in products of the Gabriel synthesis, three atoms of this element form a double-bonded chain in the explosive sodium azide. Its dioxide is a toxic brown gas. Diazotroph bacteria can "fix" this element. Hydrazine and laughing gas both contain this element found in imines, amides, and amines, as well as ammonia. For 10 points, name this gaseous element which comprises about 80% of the atmosphere.
This element detected via the Kjeldahl method is double-bonded to carbon in certain compounds which react with dienes in the Aza Diels-Alder reaction.
{nitrogen} [prompt on {N}]