AFMC AFMC Solved Paper-2001

  • question_answer
    The atomic radius decreases in a period due to:

    A) increase in nuclear attraction

    B) decrease in nuclear attraction

    C) increase in number of electrons

    D) decrease in number of electrons

    Correct Answer: A

    Solution :

    In a period as we move from left to right number of shells remain the same but the nuclear charge increases due to which the outermost shell is now pulled with greater force towards the centre, thereby reducing  the size of the atom considerably.


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