A

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Q. In which of the following groups, are the elements written in the descending order of their respective atomic weights?

  • (A) Oxygen, argon, nitrogen, hydrogen
  • (B) Nitrogen, carbon, oxygen, hydrogen
  • (C) Oxygen, nitrogen, helium, bromine
  • (D) Oxygen, nitrogen, helium, hydrogen
  • Correct Answer - Option(D)
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  • Filed under category Chemistry
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