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WB JEE Medical WB JEE Medical Solved Paper-2007

  • question_answer
    The ionisation energy of hydrogen atom is 13.6 eV. What will be the ionisation energy of \[\text{H}{{\text{e}}^{\text{+}}}\]?

    A)  \[13.6\text{ }eV\]          

    B)  \[54.4\text{ }eV\]

    C)  \[122.4\text{ }eV\]        

    D)  Zero

    Correct Answer: B

    Solution :

                     lonisation energy of \[H{{e}^{+}}=13.6\times {{Z}^{2}}\,eV\] \[=13.6\times {{(2)}^{2}}eV\] \[=13.6\times 4\,eV=54.4\,eV\]


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