Air is the mixture of different gases. The air in earth's atmosphere is made up of approximately 78 percentage nitrogen and 21percentage oxygen.Air is also has small amount of lots of other gases.
There are various type of gases in the air .
1) Nitrogen
2) Oxygen
3)Argon
4)Carbon dioxide
5) Neon
6) Helium
7)Methane
8) Krypton
9) Hydrogen
10)water vapour 
Also Read :- What percentage of the total gases present in the atmosphere is nitrogen?