Which of the following cobalt-(III) complex i | vedclass

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

Question

(A) The oxidation state of $Co$ in all given complexes is $+3$. The electronic configuration of $Co^{3+}$ is $[Ar] 3d^6$.$1$. In $[Co(CN)_6]^{3-}$,$CN

Vedclass · Accepted Answer

$[Co(H_2O)_6]^{3+}$

Vedclass · Answer

(A) The oxidation state of $Co$ in all given complexes is $+3$. The electronic configuration of $Co^{3+}$ is $[Ar] 3d^6$.$1$. In $[Co(CN)_6]^{3-}$,$CN^-$ is a strong field ligand,causing pairing of electrons. It forms a low spin $d^2sp^3$ complex which is diamagnetic.$2$. In $[Co(C_2O_4)_3]^{3-}$,$C_2O_4^{2-}$ is a strong field ligand,forming a low spin $d^2sp^3$ complex which is diamagnetic.$3$. In $[Co(H_2O)_6]^{3+}$,$H_2O$ is a weak field ligand. It does not cause pairing of electrons. The configuration remains $t_{2g}^4 e_g^2$,resulting in $4$ unpaired electrons. Thus,it is a high spin paramagnetic complex.

Which of the following cobalt-$(III)$ complex is paramagnetic and high spin complex?

Similar Questions

Which from the following statements about $[Co(NH_3)_6]^{3+}$ complex is $NOT$ correct?

The hybridisation of metals involved in the following complexes,$[Mn(CN)_6]^{3-}$ and $[CoF_6]^{3-}$,are respectively:

Which of the following complexes has $dsp^2$ hybridisation?

Consider that a $d^{6}$ metal ion $(M^{2+})$ forms a complex with aqua ligands,and the spin-only magnetic moment of the complex is $4.90 \ BM.$ The geometry and the crystal field stabilization energy $(CFSE)$ of the complex are:

Nickel $(Z = 28)$ forms a paramagnetic complex $[NiX_4]^{2-}$ with a uninegative monodentate ligand $X^-$. The number of unpaired electrons in nickel and the geometry of this complex ion are,respectively:

Vedclass Test Series

Exam Paper Generator

Online Exam Module