STANDARDPhysics-Atomic Structure
STANDARD Physics Bohr's Model MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The energy required to excite an electron in hydrogen atom to its first excited state is
A
8.5 eV
B
10.2 eV
C
12.7 eV
D
13.6 eV
Correct Answer
Option B
Detailed Explanation
The energy difference between the ground state and the first excited state of hydrogen is calculated using the formula E = -13.6/n² eV. For n=1, E₁ = -13.6 eV and for n=2, E₂ = -3.4 eV. The required energy is E₂ - E₁ = 10.2 eV.
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