Atomic numbers of Cr,Fe,and Co are 24,26,and | vedclass

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

Question

(D) To determine which complex is paramagnetic,we analyze the electronic configuration of the central metal ion in each complex:$1$. $[Co(NH_3)_6]^{3+

Vedclass · Accepted Answer

$[Cr(CN)_6]^{3-}$

Vedclass · Answer

(D) To determine which complex is paramagnetic,we analyze the electronic configuration of the central metal ion in each complex:$1$. $[Co(NH_3)_6]^{3+}$: $Co^{3+}$ is $3d^6$. $NH_3$ is a strong field ligand,causing pairing. All electrons are paired $(t_{2g}^6 e_g^0)$,so it is diamagnetic.$2$. $[Co(CN)_6]^{3-}$: $Co^{3+}$ is $3d^6$. $CN^-$ is a strong field ligand,causing pairing. All electrons are paired $(t_{2g}^6 e_g^0)$,so it is diamagnetic.$3$. $[Fe(CN)_6]^{4-}$: $Fe^{2+}$ is $3d^6$. $CN^-$ is a strong field ligand,causing pairing. All electrons are paired $(t_{2g}^6 e_g^0)$,so it is diamagnetic.$4$. $[Cr(CN)_6]^{3-}$: $Cr^{3+}$ is $3d^3$. The configuration is $t_{2g}^3 e_g^0$. There are $3$ unpaired electrons in the $3d$ orbitals. Thus,it is paramagnetic.Therefore,the correct option is $D$.

Atomic numbers of $Cr$,$Fe$,and $Co$ are $24$,$26$,and $27$ respectively. Which of the following inner orbital octahedral complexes are paramagnetic?

Similar Questions

For the complex ion $[Ni(Cl)_4]^{2-}$, what is the theoretical value of the magnetic moment (in $BM$)?

Among the species given below, the spin-only magnetic moment is highest for
(Given: Atomic number of $Ti = 22, Mn = 25, Fe = 26$ and $Co = 27$)

Two soluble salts of iron $A$ & $B$,on combining with excess of a reagent $(R)$ produce compound $C$ (pale yellow) & $D$ (yellow) respectively. Reaction of $A$ with $D$ and that of $B$ with $C$ both produce a blue coloured compound. Which of the following statements is correct?

Among the following ions,which one has the highest paramagnetism?

Among $(a) - (d)$,the complexes that can display geometrical isomerism are:
$(a) [Pt(NH_3)_3 Cl]^+$
$(b) [Pt(NH_3) Cl_5]^-$
$(c) [Pt(NH_3)_2 Cl(NO_2)]$
$(d) [Pt(NH_3)_4 ClBr]^{2+}$

Vedclass Test Series

Exam Paper Generator

Online Exam Module