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14 April, 22:16

A element which is not a monatomic

A. Helium

B. Argon

C. Iron

D. Oxygen

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Answers (2)
  1. 15 April, 01:59
    0
    A:Helium

    Explanation:

    Some element are monatomic, meaning they are made of single (mon-) atom (-atomic) in their molecular form.
  2. 15 April, 02:04
    0
    Answer: Helium

    Explanation: Helium is a monatomic inert gas. It won't even bond with itself. With two electrons, both in the 1s sublevel, there is no arrangement of two He atoms which can be lower in energy. If diatomic molecules like H2, O2, Cl2, etc.
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