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.

Similar Questions

Which of the following pairs of complexes both show optical activity?

In which case is a racemic mixture obtained upon mixing its mirror images ($d$ and $l$ forms) in a $1:1$ molar ratio?

Which of the following complex compounds will exhibit highest paramagnetic behaviour? (At. No. $Ti = 22$,$Cr = 24$,$Co = 27$,$Zn = 30$)

Number of stereoisomers exhibited by $[Co(en)_{2} Cl_{2}]^{+}$ is

For which pair is the magnetic moment $\mu = \sqrt{15} \ BM$ correct?

Vedclass Test Series

Exam Paper Generator

Online Exam Module