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:

Question

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:

Aicharya · Accepted Answer

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.

Given below are two statements, one is labelled as assertion A and the other is labelled as Reason R .…

Solution