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Which one of the following is not a monatomic element?

Options

  1. ACopper
  2. BHelium
  3. CIodine
  4. DBarium

Correct answer

C. Iodine

Step-by-step solution

Monoatomic elements are simply elements that are stable as single atoms Examples of monatomic elements includeare the noble gases, such as: Helium etc. The elements hydrogen, oxygen, nitrogen, fluorine, chlorine, bromine and iodine occur naturally as the diatomic molecules of their atoms.

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