What is the energy needed to ionize H-atom from its second excited state if the

Question

What is the energy needed to ionize H-atom from its second excited state if the energy of the ground state of H-atom is 13

Options:

A . 3.4 eV

B . 1.51 eV

C . 12.1 eV

D . 13.6 eV

Answer: Option B

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