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The minimum excitation energy of an electron revolving in the first orbit of hydrogen is

Options

  1. A3.4 eV
  2. B8.5 eV
  3. C10.2 eV
  4. D13.6 eV

Correct answer

C. 10.2 eV

Step-by-step solution

Energy of electron in n ^ th orbit E_n= -13.6 e V n^2 Excitation energy of electron from n=1 to n=2E=-13.6 [ 1 2^2 - 1 1 ]=-13.6 [ 1 4 - 1 1 ]=10.2 eV

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