JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
The statements that are incorrect about the nickel (II) complex of dimethylglyoxime are:
A. It is red in colour
B. It has a high solubility in water at \(pH =9\)
C. The Ni ion has two unpaired d-electrons
D. The \(N - Ni - N\) bond angle is almost close to \(90^{\circ}\)
E. The complex contains four five-membered metallacycles (metal containing rings)
Choose the correct answer from the options given below :
- A C and E only
- B A, D and B only
- C B, C and E only
- D C and D only
Answer & Solution
Correct Answer
(C) B, C and E only
Step-by-step Solution
Detailed explanation
In the above complex, Ni is present in +2 oxidation number. A) It is rosy red ppt B) It is precipitated in basic medium C) \(Ni ^{+2}: 3 d^8\) Hybridisation : \(dsp ^2\) Unpaired \(e ^{-}=0\) Geometry : Square planar D) \(N - Ni - N\) Bond angle is close to \(90^{\circ}\) E) 2…
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