Question

which gas is found in the greatest abundance in the modern atmosphere? carbon dioxide silicon argon nitrogen

Explanation:

The modern atmosphere is composed of approximately 78% nitrogen (\(N_2\)), 21% oxygen (\(O_2\)), 0.93% argon (\(Ar\)), and 0.04% carbon dioxide (\(CO_2\)). Silicon (\(Si\)) is a solid at standard temperature and pressure and is not a gas in the atmosphere.

Answer:

nitrogen