[CoCl(NH3)5]2+absorbs with higher wavelength of light with respect to [Co(NH3)5(H2O)]3+ because Cl− is weaker ligand than H2O. The crystal field stabilisation is higher for [Co(NH3)5(H2O)]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. assertion A : [ CoCl ( NH_3)_5]^2+ absorbs at…
JEE Main 2023 — Chemistry Inorganic Chemistry
2023mcqmedium
Given below are two statements, one is labelled as assertion A and the other is labelled as Reason R.
assertion A : [CoCl(NH3)5]2+ absorbs at lower wavelength of light with respect to [Co(NH3)5(H2O)]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:
Official previous-year question
Held on 11 Apr 2023 · Verified 6 Jul 2026.
Options
- A
A is false but R is true
- B
A is true but R is false
- C
Both A and R are true and R is the correct explaination of A
- D
Both A and R are true and R is NOT the correct explaination of A
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