SOLAR SYSTEM

Detailed explanation-1: -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-2: -The other primary reason is that, unlike oxygen, nitrogen is very stable in the atmosphere and is not involved to a great extent in chemical reactions that occur there. Thus, over geological time, it has built up in the atmosphere to a much greater extent than oxygen.

Detailed explanation-3: -In fact, nitrogen is the most abundant element in Earth’s atmosphere: approximately 78% of the atmosphere is nitrogen! Nitrogen is important to all living things, including us.

Detailed explanation-4: -Due to strong triple bond in N2(N≡N) or high activation energy, nitrogen is unreactive and thus is most abundant gas in the Earth’s atmosphere.

Detailed explanation-5: -The composition of the current atmosphere is 78% nitrogen, 21% oxygen, 1% argon with only 0.03% carbon dioxide. These proportions are for clean dry air; the water content in air can vary greatly from nearly none in the driest deserts to about 4% in the tropics.