lämmastik
keemiline element, mittemetall, värvuseta ja lõhnata gaas, sulamistemperatuur –210,0 ºC, tihedus 1,25 kg/m3, a colourless gaseous element belonging to group 15 (formerly VB) of the periodic table; a.n. 7; r.a.m. 14.0067; d. 1.2506 g dm−3; m.p. –209.86°C; b.p. –195.8°C