Verified Solution • 2025–26 Session
moderate
QJEEM20Ch9597: JEE Main 2020 Chemistry - Class 12 JEEM20Ch9597 Solution: Simplified absorption spectra of three complexes ((i), (ii) and …
Simplified absorption spectra of three complexes ((i), (ii) and (iii)) of Mn+ ion are provided below; their max values are marked as A, B and C respectively. The correct match between the complexes and their max values is
(i) [M(NCS)6](–6 + n)
(ii) [MF6](–6 + n)
(iii) [M(NH3)6]n+
(i) [M(NCS)6](–6 + n)
(ii) [MF6](–6 + n)
(iii) [M(NH3)6]n+
Multiple Choice Options
- A A-(i), B-(ii), C-(iii)
- B A-(ii), B-(iii), C-(i)
- C A-(ii), B-(i), C-(iii)
- D A-(iii), B-(i), C-(ii)
Step-by-Step Verified Solution
Stronger the ligand greater is splitting of d orbitals and smaller will be wavelength of light absorbed.
The splitting of ligand is F– < NCS– < NH3
So order of wavelength of light absorbed is
( max)NH3 < ( max)NCS– < ( max)F–
The splitting of ligand is F– < NCS– < NH3
So order of wavelength of light absorbed is
(