Constituent
- Name
- Primary vacuum - ~1e-2 mbar
- Family
- gas
- Class
- molecular gas
- Compound type
- gas
- Relevance
- main - major
- Arrangement
- single phase
- Mass fraction
- 1.0 $\pm$ 0.001
- Isotope mixture type
- terrestrial abundance
- Phase type
- gas
- Texture
- gas