[Ni(PPh_3)_2Cl_2] is a paramagnetic complex. | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) $[Ni(PPh_3)_2Cl_2]$ is a $d^8$ complex. Since it is paramagnetic, it must have a tetrahedral geometry.$(A)$ Tetrahedral complexes of the type $[MA

Vedclass · Accepted Answer

$A, B$ and $D$ only

Vedclass · Answer

(B) $[Ni(PPh_3)_2Cl_2]$ is a $d^8$ complex. Since it is paramagnetic, it must have a tetrahedral geometry.$(A)$ Tetrahedral complexes of the type $[MA_2B_2]$ do not show geometrical isomerism. Thus, statement $A$ is incorrect.$(B)$ The complex is blue in colour, not white. Thus, statement $B$ is incorrect.$(C)$ For $Ni^{2+}$ $(d^8)$ in a tetrahedral field, the configuration is $e^4 t_2^4$, which has $2$ unpaired electrons. The spin-only magnetic moment is $\mu = \sqrt{n(n+2)} = \sqrt{2(2+2)} = \sqrt{8} \approx 2.83 \ BM$. Thus, statement $C$ is correct.$(D)$ The $CFSE$ for a tetrahedral complex is calculated as $CFSE = (-0.6 	imes n_e + 0.4 	imes n_{t_2}) \Delta_t$. For $d^8$, $CFSE = (-0.6 	imes 4 + 0.4 	imes 4) \Delta_t = -0.8 \Delta_t$. The statement mentions $-0.8 \Delta_0$, which is incorrect.$(E)$ $Ni(CO)_4$ is tetrahedral, and $[Ni(PPh_3)_2Cl_2]$ is also tetrahedral. Thus, statement $E$ is correct.The incorrect statements are $A, B,$ and $D$.

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

Similar Questions

What type of hybridization is found in $[Ni(Cl)_4]^{2-}$?

Identify the number of unpaired electrons present and the geometry,respectively,of the complex $[CoF_6]^{3-}$ (given atomic number of $Co = 27$).

Match the following hybridization in Column $I$ with the corresponding coordination complexes in Column $II$.
$A. sp^3$ $(i). [Co(NH_3)_6]^{3+}$
$B. dsp^2$ $(ii). [Ni(CO)_4]$
$C. sp^3d^2$ $(iii). [Pt(NH_3)_2Cl_2]$
$D. d^2sp^3$ $(iv). [CoF_6]^{3-}$
$(v). [Fe(CO)_5]$

Which of the following matches is incorrect?
Complex compounds $-$ Type of hybridization

The geometry and magnetic behaviour of the complex $[Ni(CO)_4]$ are

Vedclass Test Series

Exam Paper Generator

Online Exam Module