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Absorption of Light quiz

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  • What happens to an electron during absorption?
    The electron takes in energy and moves to a higher energy state, also called an excited state.
  • What is emission in the context of electron transitions?
    Emission is when an electron releases energy and returns to a lower energy state or its ground state.
  • According to Bohr's model, what does the movement of an electron between shells represent?
    It represents the absorption or emission of energy as the electron transitions between different energy levels.
  • What is the Lyman series and where does it fall in the electromagnetic spectrum?
    The Lyman series involves electrons dropping to the first shell and falls within the ultraviolet (UV) spectrum.
  • Which electron transition series is associated with visible light emission?
    The Balmer series, where electrons drop to the second shell, is associated with visible light emission.
  • What region of the electromagnetic spectrum does the Paschen series correspond to?
    The Paschen series corresponds to the infrared (IR) region.
  • How does the distance between electron shells change as the shell number increases?
    The distance between shells decreases as the shell number increases.
  • What formula is used to calculate the potential energy of an electron in a shell?
    Potential energy = -1.8 x 10^-18 joules x (1/n^2), where n is the shell number.
  • How can emission spectra be used to identify elements?
    Each element produces a unique emission spectrum, allowing identification by analyzing the colored lines.
  • What does an emission spectrum look like?
    It appears as colored lines on a black background.
  • What does an absorption spectrum look like?
    It appears as black bands on a colored background.
  • How is an absorption spectrum produced?
    It is produced when external energy passes through an atom, and the atom absorbs specific frequencies of light.
  • What is the fundamental difference between absorption and emission?
    Absorption involves taking in energy to move to a higher state, while emission involves releasing energy to return to a lower state.
  • What happens to the energy released when an electron falls from a higher to a lower shell?
    The energy is emitted as electromagnetic radiation, with the amount depending on the distance between shells.
  • Why do higher energy transitions release more energy?
    Because the energy difference between shells is greater for transitions from higher shells to lower shells.