Coordination Compounds by Alfred Werner
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Questions and Answers

What was the primary contribution of Alfred Werner to coordination compounds?

  • Formulating the concept of primary and secondary valence for metal ions (correct)
  • Conducting conductivity measurements in solution
  • Discovering the behavior of cobalt(III) chloride with ammonia
  • Characterizing a large number of coordination compounds
  • How many chloride ions are bonded to a cobalt ion in CoCl3.5NH3 according to Werner's theory?

  • 5
  • 3 (correct)
  • 4
  • 2
  • What is the color of CoCl3.6NH3 coordination compound?

  • Purple
  • Yellow (correct)
  • Violet
  • Green
  • When excess silver nitrate is added to a solution of cobalt(III) chloride with ammonia, what happens to some of the chloride ions?

    <p>They precipitate as AgCl</p> Signup and view all the answers

    Which observation supports Werner's theory that certain groups remain bonded to the cobalt ion during a reaction?

    <p>Precipitation of AgCl in varying mole ratios</p> Signup and view all the answers

    According to Werner's theory of coordination compounds, what do the secondary valences represent?

    <p>The number of groups bound directly to the metal ion</p> Signup and view all the answers

    In Werner's theory, what types of linkages do metals in coordination compounds exhibit?

    <p>Primary and secondary linkages</p> Signup and view all the answers

    What characteristic spatial arrangements correspond to different coordination numbers in coordination compounds?

    <p>Coordination polyhedra</p> Signup and view all the answers

    Which geometrical shapes are more common in coordination compounds of transition metals according to Werner's theory?

    <p>Octahedral, tetrahedral, and square planar</p> Signup and view all the answers

    What distinguishes double salts from complex ions in their behavior when dissolved in water?

    <p>Complex ions do not dissociate into simple ions</p> Signup and view all the answers

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