JEE Main & Advanced
Physics
Atomic Physics
Question Bank
Atomic Structure
question_answer
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 [MP PMT 1995]
A) 13.6 eV
B) 4.53 eV
C) 3.4 eV
D) 1.51 eV
Correct Answer:
D
Solution :
Required energy \[{{E}_{3}}=\frac{+13.6}{{{3}^{2}}}=1.51eV\]