5 public questions tagged with this topic.
[Ni(H₂O)6]2+ (Ni₂+, d8) in an octahedral field has t2g6 eg2, and the d-d transition from t2g to eg absorbs visible light (green color).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
[Cr(H₂O)6]3+ (Cr₃+, d3) undergoes d-d transitions, absorbing visible light.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
[Ni(H₂O)6]2+ (Ni₂+, d8) in an octahedral field undergoes d-d transitions, absorbing visible light (green color).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Crystal Field Theory - CFT and Crystal Field Splitting and CFSE
[Cu(H₂O)4]2+ (Cu₂+, d9) undergoes a d-d transition in its square planar field, absorbing visible light (blue color), unlike [Ni(CO)4] (d10, no transition).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Crystal Field Theory - CFT and Crystal Field Splitting and CFSE
[Mn(H₂O)6]2+ (Mn₂+, d5) in an octahedral field undergoes d-d transitions, absorbing visible light (pale pink color).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Colour and Magnetic Properties and Stability and Importance
