hydrogen
Oxygen
Carbon dioxide
oxygen
Water vapour.
hydrogen
hydrogen
hydrogen
Nearly 100% of air is gas. The rest is particulate matter: dust, pollen, and also tiny organisms.
Air is made up of 78% nitrogen, 20.95% oxygen, 0.93% argon plus traces of other gases.
Showing gas concentrations as percentages of dry air allows for easier comparison of the relative amounts of different gases in the atmosphere. Dry air is a consistent reference point because its composition is relatively stable, making it a convenient baseline for expressing variations in gas concentrations.
80,000
The old name of hydrogen gas is "inflammable air."
The gas you breathe in from the air is called oxygen.
There is no gas by the name of "air" because air is really combination of several gasses.
Oxygen
Your question posted is not explained well. If you mean "Why does Nitrogen take up more percentage of air on Earth than all other gases" the answer simply is "it's the way god made the air" although Nitrogen and Oxygen percentages can drop a little if the air is more humid.