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The energy of an electron in hth orbit of hydrogen atom is –13.6/n2ev energy required to excite the electron from the first orbit to the third orbit is -

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Question

The energy of an electron in hth orbit of hydrogen atom is –13.6/n2ev energy required to excite the electron from the first orbit to the third orbit is

Options

  • 10.2 j

  • 12.09 j

  • 12.09 ev

  • 13. ev

MCQ

Solution

12.09 ev

Explanation:

E = E3 – E1

= `- (-13.6)/3^2 - ((= 13.6)/1^2)` = 12.9 ev.

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