Nitrogen
The layer of gas that surrounds the Earth is called the atmosphere.
Chaotic gas mixture.
The common name for N2 gas is nitrogen, and it is the most prevalent gas in Earth's atmosphere, making up about 78% of the air we breathe.
The major component of Neptune's atmosphere is hydrogen and helium, with some methane. Neptune, a gas giant, still has much of the same atmosphere that it had at the time of formation.
Carbon dixoide is the major gas. It depletes the ozone.
Nitrogen-78%
The atmosphere.
oxygen
The major component of Jupiter's atmosphere is hydrogen, which makes up about 75% of its atmosphere. Helium is the second most abundant gas, making up about 24% of the atmosphere. Additionally, trace amounts of other gases like methane, ammonia, and water vapor are present.
Oxygen accounts for 42% (by volume) of an extremely rarefied atmosphere.
Oxygen
Nitrogen is the most common gas in the earth's atmosphere (air is the name of that gas mixture).