J & K CET Engineering J and K - CET Engineering Solved Paper-2009

  • question_answer
    The atom of smallest atomic radius among the following is

    A)  Na             

    B)  K

    C)  Br             

    D)  Li

    Correct Answer: C

    Solution :

     When we move from left to right in the Periodic Table, atomic radius decreases. Whilein a group atomic radius increases from up to down. Moreover, the radius of alkali metals is metallic radius and that of halogens is covalent radius and metallic radius > covalent radius. Thus, Br has the smallest atomic radius.


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