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NEET Sample Paper NEET Sample Test Paper-7

  • question_answer
    As per Bohr model, the minimum energy (in eV) required to remove an electron from the ground state of doubly ionized \[Li\,(Z=3)\] is:

    A)  \[1.51\]                       

    B)  \[13.6\]

    C)  \[40.8\]                       

    D)  \[122.4\]

    Correct Answer: D

    Solution :

    For lithium,   \[\varepsilon =-{{Z}^{2}}\times 13.6eV\] \[=-9\times 13.6eV=-122.4eV\] So, ionization energy \[=+122.4eV\]


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