Atomic Absorption and Emission Theory Quiz
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Questions and Answers

What does atomic absorption spectroscopy (AAS) quantify?

  • The absorption of UV-visible radiation by metal ions
  • The absorption of light by ground state metal atoms in the gaseous state (correct)
  • The emission of light by excited state metal atoms in the gaseous state
  • The fluorescence of metal ions in the gaseous state
  • Which type of radiation is involved in atomic absorption and emission spectroscopy?

  • UV: 180-380 nm, Visible: 380-780 nm (correct)
  • Infrared radiation
  • Microwaves
  • X-rays
  • What type of transition occurs in atomic emission spectroscopy?

  • Nuclear: Changes in the nucleus of the atom
  • Electronic: Valence electrons promoted to higher energy levels, followed by decay to intermediate or ground state level (correct)
  • Rotational: Rotation of molecules
  • Vibrational: Movement of atoms within a molecule
  • What elements can be analyzed by atomic absorption spectroscopy?

    <p>Atoms of metals and ions of metals</p> Signup and view all the answers

    What process is measured in atomic absorption and emission spectroscopy?

    <p>Absorption (AAS), Emission (AES) or Fluorescence (AFS)</p> Signup and view all the answers

    Study Notes

    Atomic Absorption and Emission Spectroscopy

    • Atomic absorption spectroscopy (AAS) measures light absorption by ground state metal atoms in the gaseous state
    • Atomic emission spectroscopy (AES) measures light emission by excited state metal atoms in the gaseous state
    • AAS can analyze atoms and ions of metals for qualitative and quantitative analysis of over 70 elements
    • AAS is widely used for metal analysis
    • AES can't analyze elements highlighted in white on the periodic table
    • UV radiation ranges from 180-380 nm, visible radiation ranges from 380-780 nm
    • Interaction of UV-visible radiation with metals causes changes in electron distribution of valence electrons
    • AAS measures absorption, AES measures emission, and AFS measures fluorescence
    • The type of transition involved is electronic, where valence electrons are promoted to higher energy levels and then decay to intermediate or ground state level (emission)

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    Description

    Test your knowledge of atomic absorption and emission theory with this quiz. Explore the principles of AAS, quantification of light absorption by metal atoms, and the analysis of ground state metal atoms in the gaseous state. Perfect for students studying analytical chemistry and spectroscopy.

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