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  5. Structure of Atom / परमाणु संरचना

JEE Main & Advanced Chemistry Structure of Atom / परमाणु संरचना Sample Paper Topic Test - Structure of Atom

  • question_answer
    The wave number of first line of Balmer series of hydrogen is \[15200\,c{{m}^{-1}}\]. The wave number of first Balmer line of \[L{{i}^{2+}}\] ion is

    A) \[15200\,c{{m}^{-1}}\]

    B) \[60800\,c{{m}^{-1}}\]

    C) \[76000\,c{{m}^{-1}}\]

    D) \[136800\,c{{m}^{-1}}\]

    Correct Answer: D

    Solution :

    [d] v for hydrogen like species \[={{v}_{H}}\times {{Z}^{2}}=15200\times {{3}^{2}}=15200\times 9=136800\,c{{m}^{-1}}\]


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