AP EAMCET201824 Apr 2018Morning ShiftChemistryCoordination CompoundsActual
The green coloured complex ion of nickel in its aqueous solution is
Options
- A[ Ni ( en )₃ ]²⁺
- B[ Ni ( H ₂ O )₂( en )₂ ]²⁺
- C[ Ni ( H ₂ O )₄( en ) ]²⁺
- D[ Ni ( H ₂ O )₆ ]²⁺
Correct answer
D. [ Ni ( H ₂ O )₆ ]²⁺
Step-by-step solution
In complex [ Ni ( H ₂ O )₆ ]²⁺ the strong ligand is absent. Thus, electrons do not go for pairing and two unpaired e⁻ are present in Ni ²⁺ complex. Hence, is a coloured complex.