Q. Arrange the following gases in decreasing order of their composition in the atmosphere.
Choose the correct option:
Gases | Percentage |
Nitrogen (N2) | 78.08% |
Oxygen (O2) | 20.95% |
Argon (Ar) | 0.93% |
Carbon Dioxide (CO2) | 0.04% |
Neon (Ne) | 0.0018% |
Helium (He) | 0.0005% |