Balmer series of hydrogen

Target entity: Balmer series of hydrogen
Context triple: [Bohr model of the atom, explains, Balmer series of hydrogen]

• A. 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).
• B. Rydberg constant
  The Rydberg constant is a fundamental physical constant that characterizes the limiting value of the highest wavenumber (or lowest wavelength) of any photon that can be emitted from the hydrogen atom, playing a key role in atomic spectroscopy and quantum theory.
• C. Atombau und Spektrallinien
  *Atombau und Spektrallinien* is Arnold Sommerfeld’s influential textbook on atomic structure and spectral lines that helped shape the development of early quantum theory.
• D. Stark effect
  The Stark effect is the splitting and shifting of atomic or molecular spectral lines caused by an external electric field.
• E. Sommerfeld fine-structure formula
  The Sommerfeld fine-structure formula is a relativistic extension of the Bohr model that accurately predicts the fine-structure energy levels of the hydrogen atom.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Balmer series of hydrogen
Target entity description: 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.

• A. 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).
• B. Rydberg constant
  The Rydberg constant is a fundamental physical constant that characterizes the limiting value of the highest wavenumber (or lowest wavelength) of any photon that can be emitted from the hydrogen atom, playing a key role in atomic spectroscopy and quantum theory.
• C. Atombau und Spektrallinien
  *Atombau und Spektrallinien* is Arnold Sommerfeld’s influential textbook on atomic structure and spectral lines that helped shape the development of early quantum theory.
• D. Stark effect
  The Stark effect is the splitting and shifting of atomic or molecular spectral lines caused by an external electric field.
• E. Sommerfeld fine-structure formula
  The Sommerfeld fine-structure formula is a relativistic extension of the Bohr model that accurately predicts the fine-structure energy levels of the hydrogen atom.
• F. None of above. chosen