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-electro

Question

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° 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

Prashant Kotian · Accepted Answer

Correct answer: C. 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 : 3d Hybridisation : dsp Unpaired e – = 0 Geometry : Square planar D) N–Ni–N Bond angle is close to 90° E) 2 five membered metal containing rings are formed. ALLEN 

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