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

  • question_answer
      Identify the ion from the following figures. What is the valency of sodium atom? Give reason.

    Answer:

                      Figure number (ii) is correct because sodium ion  is formed when one electron is lost. The valency of sodium atom is one because stable (octet) electronic configuration is obtained after loss of one electron.


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