JEE Main20202 Sep 2020Evening ShiftChemistryCoordination CompoundsActual
Simplified absorption spectra of three complexes ((i) and (ii) and (iii)) of M + n ion are provided below; their λ max values are marked as A , B and C respectively. The correct match between the complexes and their λ max values is: (i) M ( NCS ) 6 ( - 6 + n ) (ii) MF 6 ( - 6 + n ) (iii) M NH 3 6 n +
Options
- AA - ( iii ) ,   ( B ) - ( i ) ,   C - ( ii )
- BA - ( ii ) ,   ( B ) - ( i ) ,   C - ( iii )
- CA - ( ii ) ,   ( B ) - ( iii ) ,   C - ( i )
- D  A - ( i ) ,   ( B ) - ( ii ) ,   C - ( iii )
Correct answer
A. A - ( iii ) ,   ( B ) - ( i ) ,   C - ( ii )
Step-by-step solution
Stronger the ligand greater is splitting of d orbitals and smaller will be wave length of light absorbed. The splitting power of ligands is NH 3 > NCS - > F - So order of wave length of light absorbed is λ NH 3 < λ NC S ¯ < λ F -