STANDARD Chemistry Bohr's Model MCQ Question
The energy required to excite an electron in hydrogen atom to its first excited state is
8.5 eV
10.2 eV
12.7 eV
13.6 eV
Correct Answer
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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