SOLAR SYSTEM

Detailed explanation-1: -Atmosphere contains 78% nitrogen.

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: -Oxygen is the most abundant element in the Earth’s atmosphere.

Detailed explanation-4: -Common Questions about the Abundance of Oxygen and Nitrogen After hydrogen and helium, oxygen takes the third place among the other most abundant elements, and element number seven which is nitrogen is the seventh in this regard.