Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Medium-Class 12
An electron in a hydrogen atom is in the first excited state. How much energy must be supplied to ionize the atom from this state?
A
4 eV
B
10.2 eV
C
13.6 eV
D
0 eV
Correct Answer
Option A
Detailed Explanation
The ionization energy from the ground state is 13.6 eV. In the first excited state, the electron has an energy of -3.4 eV, requiring 3.4 eV to reach zero energy (ionization).
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