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  5. Structure of the Atom

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

  • question_answer
      Why do helium, neon and argon have a zero valency? Explain.  

    Answer:

         Because their outermost shell is complete i.e., have duplet in case of helium and octet in case of neo and argon.


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