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MHT CET2008PhysicsAtomic Physics

The ground state energy of hydrogen atom is -13.6 eV . When its electron is in the first excited state, its excitation energy is

Options

  1. A3.4 eV
  2. B6.8 eV
  3. C10.2 eV
  4. Dzero

Correct answer

C. 10.2 eV

Step-by-step solution

Given, ground state energy of hydrogen atom E₁=-13.6 eV Energy of electron in first excited state array l (ie, n=2 ) E₂=- 13.6 (2)² eV array Therefore, excitation energy aligned E &=E₂-E₁ &=- 13.6 4 -(-13.6) &=-3.4+13.6=10.2 eV aligned

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