9th Class Science Structure of the Atom Question Bank 9th CBSE Science Structure of the Atom

  • question_answer
      Sulphur dioxide is a colourless pungent smelling gas and is a major air pollutant, (i) Write the electronic configuration of its constituent elements 'sulphur and oxygen'. (Given, ) (ii) Write the valencies of sulphur and oxygen. (iii) Are sulphur and oxygen isotopes of same element? Explain your answer. 

    Answer:



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