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Which of the following is a monoatomic gas?
Question

Which of the following is a monoatomic gas?

A.

Chlorin

B.

Oxygen

C.

Xenon

D.

Hydrogen

Correct option is C

The correct answer is: (c) Xenon
Explanation:
Xenon is a monoatomic gas, meaning it consists of single atoms. Xenon is a noble gas, and like other noble gases (e.g., helium, neon, argon), it exists as individual atoms in its gaseous state. 
  • Chlorine (Cl₂): Chlorine is a diatomic molecule, meaning it consists of two chlorine atoms bound together.
  • Oxygen (O₂): Oxygen is also a diatomic molecule, consisting of two oxygen atoms bonded together.
  • Hydrogen (H₂): Hydrogen is a diatomic molecule as well, consisting of two hydrogen atoms.

Information Booster:

  • Monoatomic gases like xenon, argon, and helium consist of single atoms and are typically found in the noble gases group of the periodic table.
  • Diatomic gases like oxygen, hydrogen, and chlorine exist as molecules made up of two atoms of the same element.
  • Xenon is used in various applications, including lighting (e.g., xenon arc lamps) and medical imaging (e.g., xenon gas for anesthesia).

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