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If first excitation potential of a hydrogen-like atom is V electron volt, then the ionization energy of this atom will be

Options

  1. AV electron volt
  2. B3 V 4 electron volt
  3. C4 V 3 electron volt
  4. DCannot be calculated by given information

Correct answer

C. 4 V 3 electron volt

Step-by-step solution

First excitation energy = Rhc 1 1 2 - 1 2 2 = Rhc 3 4 ∴    3 4 Rhc = V  eV ∴    Rhc = 4 V 3   eV

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