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  5. Structure of the Atom

9th Class Science Structure of the Atom

  • question_answer 33)
    Which one of the following is a correct electronic configuration of sodium? (a) 2, 8              (b) 8, 2, 1          (c) 2, 1, 8          (d) 2, 8, 1  

    Answer:

    (d) Atomic number of sodium (Na) =11 Its electronic configuration = 2, 8,1 Thus, (d) is correct.  


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