JEE Main202225 Jul 2022Evening ShiftChemistryCoordination CompoundsActual
The correct order of energy of absorption for the following metal complexes is A : Ni en 3 2 + , B : Ni NH 3 6 2 + , C : Ni H 2 O 6 2 +
Options
- AC < B < A
- BB < C < A
- CC < A < B
- DA < C < B
Correct answer
A. C < B < A
Step-by-step solution
Stronger the ligand, larger the splitting energy & higher the energy of absorption. Among the given options en is the strongest ligand due to ring formation than ammonia and than water. In all complex metal ion is same with same oxidation state. Ni en 3 + 2 A > Ni NH 3 6 + 2 B > Ni H 2 O 6 + 2 C