EVERYDAY SCIENCE

Detailed explanation-1: -Hence nitrogen constitutes 78% of the atmospheric air and is the most abundant gas in the atmosphere. Q. The second most abundant gas in the atmosphere is carbon dioxide.

Detailed explanation-2: -The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of other gases, too, such as carbon dioxide, neon, and hydrogen.

Detailed explanation-3: -By far, the most abundant gas in the Earth’s atmosphere is nitrogen, which accounts for about 78% of the mass of dry air. Oxygen is the next most abundant gas, present at levels of 20 to 21%. Although humid air seems like it contains a lot of water, the maximum amount of water vapor that air can hold is only about 4%.

Detailed explanation-4: -Nitrogen is more in the air because it is least reactive and nitrogen is generated and maintained in this natural equilibrium by plants and surface soil bacteria, who convert it to ammonium, nitrites, and nitrates before releasing it as free nitrogen back into the atmosphere.

Detailed explanation-5: -’ Nitrogen makes up 78 per cent of the air we breathe, and it’s thought that most of it was initially trapped in the chunks of primordial rubble that formed the Earth. When they smashed together, they coalesced and their nitrogen content has been seeping out along the molten cracks in the planet’s crust ever since.