GEOLOGY

Detailed explanation-1: -The abundance of gases in the atmosphere in the decreasing order is as follows: nitrogen, oxygen, argon, water vapour, carbon dioxide. Hence nitrogen constitutes 78% of the atmospheric air and is the most abundant gas in the atmosphere.

Detailed explanation-2: -Earth’s atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases.

Detailed explanation-3: -Oxygen is a major component of the solid earth, along with Si and elements such as Mg, Ca and Na. Nitrogen is not stable as a part of a crystal lattice, so it is not incorporated into the solid Earth. This is one reason why nitrogen is so enriched in the atmosphere relative to oxygen.

Detailed explanation-4: -Complete answer: Dry air in the atmosphere contains 78 % nitrogen by volume. So, nitrogen is most abundant but is unreactive.

Detailed explanation-5: -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.