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#Question id: 30


Amongst the following chemical elements that are essential to organisms, which of the following set of elements have an atomic number above that of selenium?

#1. Molecules and their Interaction Relevant to Biology
  1. Zn, Br and W

  2. Mo, Cd and I

  3. Mo, W and I

  4. Ba, Pt and Hg


Answer:- Option(s): 3


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