JEE Main & Advanced Chemistry Structure of Atom / परमाणु संरचना Question Bank Topic Test - Structure of Atom (4-5-21)

  • question_answer
    If electron falls from \[n=3\] to \[n=2\], then emitted energy is         

    A) \[10.2eV\]

    B) \[12.09eV\]

    C) \[1.9eV\]

    D) \[0.65eV\]

    Correct Answer: C

    Solution :

    [c] \[\Delta E={{E}_{3}}-{{E}_{2}}=13.6\,\left[ \frac{1}{{{(2)}^{2}}}-\frac{1}{{{(3)}^{2}}} \right]=1.9\,eV\]


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