Electron-Transfer Process and Energy Absorption
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Questions and Answers

What is the lattice energy of LiF?

  • -1050 kJ (correct)
  • +520 kJ
  • -75 kJ
  • -328 kJ

    • What is the standard heat of formation ($ riangle H^{ heta}$) of solid LiF?

  • -1050 kJ/mol
  • 192 kJ/mol
  • 520 kJ/mol
  • -617 kJ/mol (correct)

    • What is the total energy required for the ion formation of LiF from its elements?

  • +192 kJ (correct)
  • +1050 kJ
  • -617 kJ
  • -75 kJ

    • Which step in the formation of lithium fluoride involves an exothermic process?

    <p>$LiF(g) ightarrow LiF(s)$</p> Signup and view all the answers

    What is the reason for the existence of ionic substances like lithium fluoride?

    <p>Enormous release of energy when ions come together to form a solid</p> Signup and view all the answers

    What causes the production of atomic or line spectra?

    <p>Passage of electric discharge through a gas</p> Signup and view all the answers

    What happens to the atoms of the gas when an electric discharge passes through it?

    <p>They emit energy in the form of light</p> Signup and view all the answers

    Why do we not see a continuous spectrum when a narrow beam of light from an electric discharge is passed through a prism?

    <p>The emitted light contains only a few colors</p> Signup and view all the answers

    What is characteristic of the wavelengths of spectral lines in an atomic spectrum?

    <p>They are characteristic of the element producing them</p> Signup and view all the answers

    What is another term for the series of lines observed when a narrow beam of light from an electric discharge is passed through a prism?

    <p>Atomic spectrum or emission spectrum</p> Signup and view all the answers

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