Dipole-Dipole Forces in Chemistry
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Questions and Answers

What is responsible for the increase in boiling points down a group?

  • An increase in the distortion of the electronic cloud. (correct)
  • A decrease in polarizability.
  • A decrease in London forces.
  • An increase in molecular weight.

    • What is a characteristic of all the halogens in group VII-A?

  • They are all gases at room temperature.
  • They are all solids at room temperature.
  • They all have similar boiling points.
  • They are all non-polar diatomic molecules. (correct)

    • What happens to the electronic cloud when a species is polarized?

  • It becomes more symmetrical.
  • It becomes less dense.
  • It becomes distorted or disturbed. (correct)
  • It disappears entirely.

    • What is true about the polarizability of iodine compared to fluorine?

    <p>Iodine has much greater polarizability than fluorine.</p> Signup and view all the answers

    What is the boiling point of fluorine?

    <p>-188.1°C</p> Signup and view all the answers

    What is the primary consequence of increased distortion of the electronic cloud?

    <p>Stronger London forces</p> Signup and view all the answers

    What is the primary reason for the difference in physical states of fluorine and iodine at room temperature?

    <p>Difference in polarizability</p> Signup and view all the answers

    What is the correlation between the polarizability of a molecule and its boiling point?

    <p>Higher polarizability, higher boiling point</p> Signup and view all the answers

    What is the primary characteristic of the electronic cloud in a polarized species?

    <p>It is distorted</p> Signup and view all the answers

    What is the trend in boiling points observed among the halogens in group VII-A?

    <p>Increasing from fluorine to iodine</p> Signup and view all the answers

    What is the physical state of iodine at room temperature?

    <p>Solid</p> Signup and view all the answers

    What is the effect of increased polarizability on the London forces between molecules?

    <p>Strengthening</p> Signup and view all the answers

    What is the primary factor that affects the strength of London forces between molecules?

    <p>Polarizability</p> Signup and view all the answers

    What is the consequence of the temporary poles created in a polarized species?

    <p>Increased London forces</p> Signup and view all the answers

    What is the correlation between the boiling points of the halogens and their molecular weights?

    <p>Unrelated</p> Signup and view all the answers

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    Description

    This quiz covers the concept of dipole-dipole forces in chemistry, including instantaneous dipoles, induced dipoles, and the momentary force of attraction between them. It's a crucial topic in understanding the behavior of liquids and solids. Test your knowledge of chemistry concepts with this quiz!

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