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JEE Main & Advanced Chemistry Structure of Atom / परमाणु संरचना Question Bank Atomic models and Planck's quantum theory

  • question_answer
    The ratio of area covered by second orbital to the first orbital is                                                 [AFMC 2004]

    A)                 1 : 2       

    B)                 1 : 16

    C)                 8 : 1       

    D)                 16 : 1

    Correct Answer: D

    Solution :

               \[{{r}_{n}}\propto {{n}^{2}}:{{A}_{n}}\propto {{n}^{4}}\]                                 \[\frac{{{A}_{2}}}{{{A}_{1}}}=\frac{n_{2}^{4}}{n_{1}^{4}}=\frac{{{2}^{4}}}{{{1}^{4}}}=\frac{16}{1}=16\,:1\]


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