18 Questions
Why do coordination compounds exhibit characteristic optical properties?
Due to the presence of hybridized orbitals
Which theory focuses on explaining the nature of bonding in coordination compounds using the influence of ligands on the metal atom?
Valence Bond Theory
What orbitals can a metal atom use for hybridization according to Valence Bond Theory?
(n-1)d, ns, np, nd
Why is Werner's theory unable to answer why certain elements possess the property of forming coordination compounds?
It does not explain why only certain elements form coordination compounds
Which theory attributes the characteristic optical properties of coordination compounds to the presence of set of equivalent orbitals?
Valence Bond Theory
In coordination compounds, why do bonds have directional properties according to Valence Bond Theory?
Due to hybridization of metal orbitals
Why does the complex [Ti(H2O)6]3+ appear violet in color?
Due to excitation of the electron from t2g level to eg level by absorbing blue-green light
What happens to the color of the complex [Ti(H2O)6]Cl3 upon removal of water?
It becomes colorless
What is the relationship between the wavelength of light absorbed and the observed color in coordination compounds?
Different colors are observed based on the energy levels of electron transitions
Why does [Co(NH3)5(H2O)]3+ appear green in color?
Absorption of blue-green light by the complex
What effect does crystal field splitting have on the color of coordination compounds?
Results in a variety of colors observed in different compounds
How does the crystal field theory explain the color of coordination compounds?
By attributing it to d-d transitions of electrons caused by ligand interactions
Which type of isomerism can be exhibited by [Pt(NH3)(Br)(Cl)(py)]?
Geometrical isomerism
How many geometrical isomers are possible for [Cr(NH3)2Cl2(en)] +?
Three
In the compound [CoCl2(en)2], how many optical isomers are present?
One
What color will the complex [Mn(H2O)6] 2– appear in an aqueous solution?
Purple
Which of the following can exhibit both geometrical and optical isomerism?
[Co(NH3)4Cl(NO2)]Cl 2+
What will the color change be when aqueous copper sulphate reacts with potassium chloride?
Green to red solution
This quiz explores the relationship between the wavelength of light absorbed and the resulting color observed in various coordination entities. Different coordination compounds and their corresponding colors are presented along with the wavelengths of light they absorb.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
