9th Class Science Atoms and Molecules Question Bank 9th CBSE Science Atoms and Molecules

  • question_answer
      How many atoms are present in a (i)  molecule and (ii) ion?

    Answer:

                      (i) In  molecule, 2 atoms of hydrogen and 1 atom of sulphur is present. Therefore, in total there are three atoms. (ii) In ion, there is one atom of phosphorus and four atoms of oxygen. Hence, total atoms are 5.


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