NEETChemistryCoordination Compounds
Given below are two statements, one is labelled as assertion A and the other is labelled as Reason R . assertion A : CoCl NH 3 5 2 + absorbs at lower wavelength of light with respect to Co NH 3 5 H 2 O 3 + Reason R : It is because the wavelenght of light absorbed depends on the oxidation state of the metal ion. In the light of the above statements,choose the correct answer from the options given below:
Options
- AA is false but R is true
- BA is true but R is false
- CBoth A and R are true and R is the correct explaination of A
- DBoth A and R are true and R is NOT the correct explaination of A
Correct answer
A. A is false but R is true
Step-by-step solution
CoCl NH 3 5 2 + absorbs with higher wavelength of light with respect to Co NH 3 5 H 2 O 3 + because Cl - is weaker ligand than H 2 O . The crystal field stabilisation is higher for Co NH 3 5 H 2 O 3 + , hence we can say that wavelength of light absorbed depends upon the oxidation state of the metal ion.