Coordination Number and Complex Ion Formation
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Questions and Answers

Which type of ligands hold the metal atom like a claw in chelation?

  • Complex ligands
  • Polydentate ligands (correct)
  • Bidentate ligands
  • Monodentate ligands

    • What is the coordination number of EDTA when forming a chelate complex with a metal?

  • 6 (correct)
  • 7
  • 4
  • 5

    • What effect does chelation have on the stability of metal complexes compared to monodentate ligands?

  • No effect on stability
  • Increases stability (correct)
  • Reduces stability
  • Unpredictable effect on stability

    • Why are chelate complexes usually considered non-electrolytes?

    <p>They do not dissociate into ions in solution</p> Signup and view all the answers

    What property of chelates allows them to exhibit striking colors different from normal salts of the metal?

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

    Under what conditions may a poly nuclear complex form?

    <p>Only when two metal ions are involved</p> Signup and view all the answers

    What is a bidentate ligand?

    <p>A ligand that can donate two pairs of electrons to the metal ion</p> Signup and view all the answers

    Which of the following is a monodentate ligand?

    <p>Ammonia (NH3)</p> Signup and view all the answers

    What is the coordination number of a metal ion?

    <p>The number of donor atoms attached to the metal ion</p> Signup and view all the answers

    Which of the following is not a type of ligand?

    <p>Ionic ligand</p> Signup and view all the answers

    How are ligands classified based on their denticity?

    <p>Monodentate, bidentate, and polydentate</p> Signup and view all the answers

    What is the primary factor that determines the strength of a metal-ligand bond?

    <p>The electronegativity difference between the metal and ligand</p> Signup and view all the answers

    What is the coordination number of the complex formed when a metal ion binds to a bidentate ligand?

    <p>6</p> Signup and view all the answers

    Which of the following is an example of a monodentate ligand?

    <p>Chloride ion</p> Signup and view all the answers

    What is the most common coordination number for metal ions in complex ions?

    <p>4 and 6</p> Signup and view all the answers

    Which of the following is a characteristic of ligands?

    <p>Ligands contain at least one pair of unshared electrons.</p> Signup and view all the answers

    What type of ligand is formed when a metal ion binds to two nitrogen atoms in a single molecule?

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

    Which of the following statements about coordination numbers is NOT true?

    <p>Coordination number is the minimum number of monodentate ligands that can be bound to the central atom.</p> Signup and view all the answers

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