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(C) The complex formed is bis(dimethylglyoximato)nickel$(II)$.$A$) It is a bright red precipitate,so statement $A$ is correct.$B$) It is insoluble in

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$B, C$ and $E$ only

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(C) The complex formed is bis(dimethylglyoximato)nickel$(II)$.$A$) It is a bright red precipitate,so statement $A$ is correct.$B$) It is insoluble in water and precipitates in basic medium,so statement $B$ is incorrect.$C$) $Ni^{2+}$ has a $3d^8$ configuration. In the presence of strong field ligands (dimethylglyoxime),it undergoes $dsp^2$ hybridization,resulting in a square planar geometry with $0$ unpaired electrons. Thus,statement $C$ is incorrect.$D$) In a square planar geometry,the $N-Ni-N$ bond angle is approximately $90^{\circ}$,so statement $D$ is correct.$E$) The complex contains $2$ five-membered chelate rings formed by the coordination of $Ni$ with the nitrogen atoms of the two dimethylglyoxime ligands. Statement $E$ is incorrect.Therefore,the incorrect statements are $B, C,$ and $E$.

$A. sp^3$	$(i). [Co(NH_3)_6]^{3+}$
$B. dsp^2$	$(ii). [Ni(CO)_4]$
$C. sp^3d^2$	$(iii). [Pt(NH_3)_2Cl_2]$
$D. d^2sp^3$	$(iv). [CoF_6]^{3-}$
	$(v). [Fe(CO)_5]$

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