Composition of Air
Air is a mixture of different gases. More than 99% of air consist of nitrogen and oxygen.
The rest are other gases.
Gas
Nitrogen
Oxygen
Argon
Carbon dioxide
Neon
Helium
Krypton
Hydrogen
Xenon
Percent
79,119%
21,224%
0,946%
~0,0334%
0,00184%
0,00053%
0,000116%
0,00005%
0,0000088%
Table 1