Relationship between Wavelength of Light absorbed and Colour in Coordination Entities
18 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Why do coordination compounds exhibit characteristic optical properties?

  • Due to the presence of hybridized orbitals (correct)
  • Due to the influence of ligands on the metal atom
  • Due to the formation of set of equivalent orbitals
  • Due to the directional properties of the bonds
  • Which theory focuses on explaining the nature of bonding in coordination compounds using the influence of ligands on the metal atom?

  • Valence Bond Theory (correct)
  • Molecular Orbital Theory
  • Ligand Field Theory
  • Crystal Field Theory
  • What orbitals can a metal atom use for hybridization according to Valence Bond Theory?

  • ns, np
  • (n-1)d, ns, np, nd (correct)
  • (n-1)d, ns, np
  • ns, np, nd
  • Why is Werner's theory unable to answer why certain elements possess the property of forming coordination compounds?

    <p>It does not explain why only certain elements form coordination compounds</p> Signup and view all the answers

    Which theory attributes the characteristic optical properties of coordination compounds to the presence of set of equivalent orbitals?

    <p>Valence Bond Theory</p> Signup and view all the answers

    In coordination compounds, why do bonds have directional properties according to Valence Bond Theory?

    <p>Due to hybridization of metal orbitals</p> Signup and view all the answers

    Why does the complex [Ti(H2O)6]3+ appear violet in color?

    <p>Due to excitation of the electron from t2g level to eg level by absorbing blue-green light</p> Signup and view all the answers

    What happens to the color of the complex [Ti(H2O)6]Cl3 upon removal of water?

    <p>It becomes colorless</p> Signup and view all the answers

    What is the relationship between the wavelength of light absorbed and the observed color in coordination compounds?

    <p>Different colors are observed based on the energy levels of electron transitions</p> Signup and view all the answers

    Why does [Co(NH3)5(H2O)]3+ appear green in color?

    <p>Absorption of blue-green light by the complex</p> Signup and view all the answers

    What effect does crystal field splitting have on the color of coordination compounds?

    <p>Results in a variety of colors observed in different compounds</p> Signup and view all the answers

    How does the crystal field theory explain the color of coordination compounds?

    <p>By attributing it to d-d transitions of electrons caused by ligand interactions</p> Signup and view all the answers

    Which type of isomerism can be exhibited by [Pt(NH3)(Br)(Cl)(py)]?

    <p>Geometrical isomerism</p> Signup and view all the answers

    How many geometrical isomers are possible for [Cr(NH3)2Cl2(en)] +?

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

    In the compound [CoCl2(en)2], how many optical isomers are present?

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

    What color will the complex [Mn(H2O)6] 2– appear in an aqueous solution?

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

    Which of the following can exhibit both geometrical and optical isomerism?

    <p>[Co(NH3)4Cl(NO2)]Cl 2+</p> Signup and view all the answers

    What will the color change be when aqueous copper sulphate reacts with potassium chloride?

    <p>Green to red solution</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser