JEE Main & Advanced
Physics
Atomic Physics
Question Bank
Atomic Structure
question_answer
The ionisation potential of hydrogen atom is 13.6 volt. The energy required to remove an electron in the n = 2 state of the hydrogen atom is [NCERT 1983; MP PET 2005]
A) 27.2 eV
B) 13.6eV
C) 6.8eV
D) 3.4eV
Correct Answer:
D
Solution :
Energy required to remove electron in the n = 2 state\[=+\frac{13.6}{{{(2)}^{2}}}=+3.4\,eV\]