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AP EAMCET20225 Jul 2022Morning ShiftChemistryStructure of AtomActual

The energy required (in eV) to excite an electron of H -atom from the ground state to the third state is

Options

  1. A+0.85
  2. B-3.4
  3. C12.1
  4. D-12.1

Correct answer

C. 12.1

Step-by-step solution

E= -13.6 Z^2 n^2 E₁= -13.6 1^2 1^2 =-13.6 eV E₂= -13.6 1^2 3^2 =-1.5111 eV E=E₂-E₁ aligned & =-1.511-(-13.6) & =12.08 eV & 12.1 eV aligned

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