Multiple choice

The molecular formula of heavy water is-

  1. D3O

  2. D2O

  3. DO

  4. DO2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Heavy water or deuterium oxide has formula D2O, where D is deuterium (hydrogen-2 isotope with one neutron). D3O is incorrect stoichiometry, DO doesn't exist as stable molecule, and DO2 is not a valid formula.

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