Question

what are the composition of the atmosphere? how are the gases?

Answer 1

The atmosphere contains a mixture of gases. They are:

1.       Nitrogen 78% (approx.)

2.       Oxygen 21% (approx.)

3.       Carbon dioxide (0.03% to 0.04%)

4.       Noble gases 0.9%

5.       Water vapour  (approx. 4%)

Answer 2

AIR IS A MIXTURE OF VARIOUS GASES. THEY ARE:-
NITROGEN-78%
OXYGEN-21%
OTHER-1%