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Questions  

An electron in the n = 1 orbit of hydrogen atom is bound by 13.6 eV. If a hydrogen atom is in the n = 3 state, how much energy is required to ionize it

a
13.6 eV
b
4.53 eV
c
3.4 eV
d
1.51 eV

detailed solution

Correct option is D

Required energy  E3=+13.632=1.51eV

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