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Discussion :: Chemistry

  1. Periodic table contains how many groups

  2. A.

     16

    B.

     17

    C.

     18

    D.

     19

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    Answer : Option C

    Explanation :

    The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons.


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