Which of the following statements is incorrec | vedclass

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(A) $1$. In $K_4[Ni(CN)_4]$,the oxidation state of $Ni$ is $0$. The configuration is $[Ar] 3d^8 4s^2$. Due to the strong field ligand $CN^-$,the $4s$

Vedclass · Accepted Answer

$K_4[Ni(CN)_4]$ is square planar while $K_2[Ni(CN)_4]$ is paramagnetic.

Vedclass · Answer

(A) $1$. In $K_4[Ni(CN)_4]$,the oxidation state of $Ni$ is $0$. The configuration is $[Ar] 3d^8 4s^2$. Due to the strong field ligand $CN^-$,the $4s$ electrons pair up in the $3d$ orbital,resulting in a $d^{10}$ configuration. It is tetrahedral and diamagnetic.$2$. In $K_2[Ni(CN)_4]$,the oxidation state of $Ni$ is $+2$. The configuration is $[Ar] 3d^8$. $CN^-$ is a strong field ligand,causing pairing of electrons,resulting in $dsp^2$ hybridization (square planar) and it is diamagnetic.$3$. In $K_2[NiCl_4]$,the oxidation state of $Ni$ is $+2$. The configuration is $[Ar] 3d^8$. $Cl^-$ is a weak field ligand,resulting in $sp^3$ hybridization (tetrahedral) and it is paramagnetic.$4$. Evaluating the options: Option $A$ is incorrect because $K_4[Ni(CN)_4]$ is tetrahedral,not square planar,and $K_2[Ni(CN)_4]$ is diamagnetic,not paramagnetic. Option $C$ is also incorrect as one is diamagnetic and the other is diamagnetic (both have $\mu = 0$),but the statement implies they are the same,which is true,yet $A$ is fundamentally incorrect regarding geometry and magnetism.

List-$I$	List-$II$
$(1)$ $dsp^2$	$(A)$ $BrF_5$
$(2)$ $sp^3d^2$	$(B)$ $[Co(NH_3)_6]^{3+}$
$(3)$ $sp^3d$	$(C)$ $[PtCl_4]^{2-}$
$(4)$ $d^2sp^3$	$(D)$ $PCl_5$

Which of the following statements is incorrect?

Similar Questions

Which of the following statements is correct regarding the $[Fe(CN)_6]^{4-}$ complex?

The type of hybridization involved in the metal ion of the $[Ni(H_2O)_6]^{2+}$ complex is:

Pick out the correct statement with respect to $[Mn(CN)_6]^{3-}.$

Match the type of hybridization given in List-$I$ with the molecules/ions given in List-$II$.

List-$I$ List-$II$

$(1)$ $dsp^2$ $(A)$ $BrF_5$

$(2)$ $sp^3d^2$ $(B)$ $[Co(NH_3)_6]^{3+}$

$(3)$ $sp^3d$ $(C)$ $[PtCl_4]^{2-}$

$(4)$ $d^2sp^3$ $(D)$ $PCl_5$

Which set of $d-$ orbitals is used by the central metal during the formation of $MnO_4^-$?

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