Humphreys series of hydrogen

Target entity: Humphreys series of hydrogen
Context triple: [Balmer series of hydrogen, relatedSeries, Humphreys series of hydrogen]

• A. Balmer series of hydrogen
  The Balmer series of hydrogen is the set of spectral emission lines in the visible region produced when electrons in a hydrogen atom transition from higher energy levels down to the second principal energy level.
• B. Paschen series
  The Paschen series is a set of spectral lines in the infrared region of the hydrogen atom’s emission spectrum corresponding to electron transitions ending at the n=3 energy level.
• C. Lyman series in hydrogen spectrum
  The Lyman series in the hydrogen spectrum is a set of ultraviolet emission or absorption lines produced when electrons in hydrogen atoms transition from higher energy levels down to the ground state (n=1).
• D. Rydberg series
  The Rydberg series is a sequence of spectral lines in atoms that converge toward an ionization limit, described by the Rydberg formula and fundamental to understanding atomic energy levels.
• E. Fraunhofer lines
  Fraunhofer lines are the dark absorption lines observed in the solar spectrum that reveal the presence and properties of elements in the Sun’s atmosphere and intervening gases.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Humphreys series of hydrogen
Target entity description: The Humphreys series of hydrogen is a set of spectral lines in the infrared region corresponding to electron transitions that end at the hydrogen atom’s sixth energy level.

• A. Balmer series of hydrogen
  The Balmer series of hydrogen is the set of spectral emission lines in the visible region produced when electrons in a hydrogen atom transition from higher energy levels down to the second principal energy level.
• B. Paschen series
  The Paschen series is a set of spectral lines in the infrared region of the hydrogen atom’s emission spectrum corresponding to electron transitions ending at the n=3 energy level.
• C. Lyman series in hydrogen spectrum
  The Lyman series in the hydrogen spectrum is a set of ultraviolet emission or absorption lines produced when electrons in hydrogen atoms transition from higher energy levels down to the ground state (n=1).
• D. Rydberg series
  The Rydberg series is a sequence of spectral lines in atoms that converge toward an ionization limit, described by the Rydberg formula and fundamental to understanding atomic energy levels.
• E. Fraunhofer lines
  Fraunhofer lines are the dark absorption lines observed in the solar spectrum that reveal the presence and properties of elements in the Sun’s atmosphere and intervening gases.
• F. None of above. chosen