atomic number 7
atomic weight 14.0067
melting point -209.86ºC (-345.8ºF)
boiling point -195.8ºC (-320.4ºF)
density (1 atm, 0º C) 1.2506 g/1
A small nitrogen filled gun used for surgical procedures.
Nitrogen Stat Page
atomic number 7 atomic weight 14.0067 melting point -209.86ºC (-345.8ºF) boiling point -195.8ºC (-320.4ºF) density (1 atm, 0º C) 1.2506 g/1 |
A small nitrogen filled gun used for surgical procedures. |
Nitrogen gas (dinitrogen, N2) makes up about 78% of the atmosphere by volume. The atmosphere of Mars contains less than 3% nitrogen. There are relatively few minerals containing nitrogen but nitrates such as "saltpetre" (NaNO3) are very important. Also there are 6.6 atoms of nitrogen for every 1 atom of silicon. There are only four elements that are more plentiful, Hydrogen, Helium, Oxygen, and Neon.
Gasses like nitrogen are usually obtained by liquification of air by a process known as fractional distillation. Nitrogen is liquified by combining high pressure and low temperature. Nitrogen will liquify at -150ºC, making it the coldest commercially produced liquid air.