This post is a list of elements and molecules in Earth's atmosphere. There are 9 elements and molecules listed below by abundance in the atmosphere. Data source: Wikipedia
- Nitrogen (N2) - 78.0%
- Oxygen (O2) - 20.9%
- Argon (Ar) - 0.93%
- Carbon Dioxide (CO2) - 0.04%
- Neon (Ne) - 0.001%
- Helium (He) - 0.0005%
- Methane (CH4) - 0.0001%
- Krypton (Kr) - 0.0001%
- Hydrogen (H2) - 0.00005%
