Which of the following is paramagnetic?

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

Question

(D) In $[Ni(CO)_4]$,the oxidation state of $Ni$ is $0$ and it has a $d^{10}$ configuration. Since $CO$ is a strong field ligand,all electrons are pair

Vedclass · Accepted Answer

$[NiCl_4]^{2-}$

Vedclass · Answer

(D) In $[Ni(CO)_4]$,the oxidation state of $Ni$ is $0$ and it has a $d^{10}$ configuration. Since $CO$ is a strong field ligand,all electrons are paired,making it diamagnetic.In $[Co(NH_3)_6]^{3+}$,$Co$ is in $+3$ oxidation state $(d^6)$. $NH_3$ is a strong field ligand,causing pairing of electrons,making it diamagnetic.In $[Ni(CN)_4]^{2-}$,$Ni$ is in $+2$ oxidation state $(d^8)$. $CN^-$ is a strong field ligand,causing pairing of electrons,making it diamagnetic.In $[NiCl_4]^{2-}$,$Ni$ is in $+2$ oxidation state $(d^8)$. $Cl^-$ is a weak field ligand and cannot cause pairing of electrons. Therefore,it has $2$ unpaired electrons,making it paramagnetic.

List-$I$ (Complex)	List-$II$ (Type of isomerism)
$A$. $[Co(NH_3)_5(NO_2)]Cl_2$	$I$. Solvate isomerism
$B$. $[Co(NH_3)_5(SO_4)]Br$	$II$. Linkage isomerism
$C$. $[Co(NH_3)_6][Cr(CN)_6]$	$III$. Ionization isomerism
$D$. $[Co(H_2O)_6]Cl_3$	$IV$. Coordination isomerism

Similar Questions

The magnetic moment of a metal ion from the first transition series is $2.83 \, BM$. How many unpaired electrons are present in this ion?

Which of the following can show optical isomerism?

Identify the ionic charge and magnetic nature respectively of the manganate ion.

The complexes $[CO(NO_2)(NH_3)_5]Cl_2$ and $[CO(ONO)(NH_3)_5]Cl_2$ are examples of .....

Vedclass Test Series

Exam Paper Generator

Online Exam Module