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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
        The number of electrons in the outermost shell  of an element is 5. What is its valency and why?

    Answer:

           Its valency is 3, because it gains 3 electrons to become stable or to complete its octet. 


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