NEET Physics Atoms Questions Solved

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An electron in the n = 1 orbit of hydrogen atom is bound by 13.6 eV energy is required to ionize it is 
(a) 13.6 eV                    (b) 6.53 eV
(c) 5.4 eV                      (d) 1.51 eV

(a) Ionization energy = Binding energy.

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