AIPMT PRELIMS2008Physics-Atomic Structure
AIPMT PRELIMS 2008 Physics Hydrogen Atom MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The ground state energy of hydrogen atom is −13.6 eV. When its electron is in the first excited state, its excitation energy is -
A
10.2 eV
B
zero
C
3.4 eV
D
6.8 eV
Correct Answer
Option A
Detailed Explanation
The excitation energy is the difference between the energy of the first excited state and the ground state. For hydrogen, the first excited state is at −3.4 eV, so the excitation energy is 10.2 eV.
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