The most abundant inert gas in the atmosphere is A. Helium B. Neon C. Argon D. Krypton

The correct answer is: C. Argon

Argon is the most abundant inert gas in the Earth’s atmosphere, making up

about 0.93% of the air. It is a colorless, odorless, and tasteless gas that is slightly heavier than air. Argon is used in a variety of applications, including lighting, welding, and cryogenics.

Helium is the second most abundant inert gas in the Earth’s atmosphere, making up about 0.0005% of the air. It is a colorless, odorless, and tasteless gas that is lighter than air. Helium is used in a variety of applications, including balloons, cryogenics, and nuclear reactors.

Neon is the third most abundant inert gas in the Earth’s atmosphere, making up about 0.0018% of the air. It is a colorless, odorless, and tasteless gas that is slightly heavier than air. Neon is used in a variety of applications, including lighting, lasers, and signs.

Krypton is the fourth most abundant inert gas in the Earth’s atmosphere, making up about 0.0001% of the air. It is a colorless, odorless, and tasteless gas that is slightly heavier than air. Krypton is used in a variety of applications, including lighting, lasers, and signs.