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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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