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JEE Main & Advanced Physics Atomic Physics Question Bank Atomic Structure

  • question_answer
    In which of the following systems will the radius of the first orbit \[(n=1)\] be minimum [Kerala PET 2002; CBSE PMT 2003]

    A)            Single ionized helium

    B)            Deuterium atom

    C)            Hydrogen atom

    D)            Doubly ionized lithium

    Correct Answer: D

    Solution :

               \[r\propto \frac{1}{Z},\]for double ionized lithium \[Z(=3)\]will be maximum. So r will be minimum


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