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NEET 2008
Exam
NEET
Year
2008
Subject
Physics
Chapter
Atomic Physics

NEET 2008 · Physics · Atomic Physics

The ground state energy of hydrogen atom is -13.6 eV . When its...

The ground state energy of hydrogen atom is −13.6eV-13.6 \mathrm{eV}. When its electron is in the first excited state, its excitation energy is

Options

  1. A0
  2. B3.4eV3.4 \mathrm{eV}
  3. C6.8eV6.8 \mathrm{eV}
  4. D10.2eV10.2 \mathrm{eV}

Correct answer

D. 10.2eV10.2 \mathrm{eV}

Step-by-step solution

Excitation energy =Ef−Ei=\mathrm{E}_{\mathrm{f}}-\mathrm{E}_{\mathrm{i}} =−3.4−(−13.6)=10.2eV=-3.4-(-13.6)=10.2 \mathrm{eV}
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