Equal masses of N₂, H₂ and O₂ are present in a vessel. Which sample contains the least number of atoms?

Verified Answer & Explanation⌄

Correct Answer: C) O₂

Concept Explanation

For equal masses of diatomic gases, the number of atoms is inversely proportional to molar mass. O₂ has the highest molar mass, so it contains the fewest atoms.

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