Question

…………..is the most abundant gas in the atmosphere.

Answer 1

N is the symbol of Nitrogen. It represents one atom of Nitrogen which has atomic number 7.

The abundance of gases in the atmosphere in the decreasing order is as follows:

Nitrogen, oxygen, argon, water vapor, carbon dioxide. Hence nitrogen constitutes 78% of the atmospheric air and is the most abundant gas in the atmosphere.

Concluding Statement: For the above reasons, Nitrogen is the most abundant gas in the atmosphere.