The Ionization energy of Hydrogen is __________?
Correct answer: C. 13.6ev
- A. 10.54ev
- B. 12.54ev
- C. 13.6ev
- D. 17.56ev
Explanation
Removing the electron from ground-state hydrogen requires 13.6 eV per atom because hydrogen's ground-state energy is -13.6 eV and ionization raises it to 0 eV. Students may choose 12.54 eV by confusing ionization energy with an excitation energy between two bound levels.
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About Spectrum of Hydrogen
The hydrogen spectrum consists of discrete emission lines produced when electrons fall between quantised energy levels and release photons. Questions use the Rydberg equation, photon energy and wavelength, and identify the Lyman, Balmer, Paschen, Brackett and Pfund series, which differ from continuous spectra.
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