Argon is the most abundant inert gas in the atmosphere, representing about 0.93% of the total air volume. Unlike nitrogen, which is technically a gas, argon is a noble gas that belongs to group 18 of the periodic table. It is primarily produced by the radioactive decay of potassium-40 in the Earth’s crust and accumulates because it is non-reactive naturally. ANSWER: (C) Argon
Which is the most abundant inert gas in the atmosphere? (A) Helium (B) Neon (C) Argon (D) Krypton
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Argon is the most plentiful noble gas in our atmosphere, making up nearly 1% of the air we breathe. While other inert gases like neon, helium and krypton are present, they exist only in trace amounts. Argon is colorless, odorless and completely non-flammable, making it chemically stable in various environments. Most of the argon in the atmosphere is Argon-40, which originates from the decay of potassium found in rocks and soil. Because it does not form compounds easily, it remains a permanent fixture of the atmosphere. It is widely used in industries, such as in lightbulbs, welding and laboratory equipment.
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