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Question

Energy required for the electron excitation in Li++ from the first to the third Bohr orbit is :


A
36.3 eV
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B
108.8 eV
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C
122.4 eV
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D
12.1 eV
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Solution

The correct option is A 108.8 eV
E=13.6z2n2
E1=13.6×321=13.6×9
E3=13.6×3232=13.6
E3E1=13.6+(13.6×9)
=108.8 eV
 

Physics

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