For a tetrahedral complex [MCl_{4}]^{2-},the | vedclass

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

Question

(A) Given,$\mu = 3.83 \ BM$. The spin-only magnetic moment is calculated as $\mu = \sqrt{n(n+2)} \ BM$,where $n$ is the number of unpaired electrons.

Vedclass · Accepted Answer

$Co$

Vedclass · Answer

(A) Given,$\mu = 3.83 \ BM$. The spin-only magnetic moment is calculated as $\mu = \sqrt{n(n+2)} \ BM$,where $n$ is the number of unpaired electrons. $3.83 = \sqrt{n(n+2)}$ $\Rightarrow n(n+2) \approx 14.67$ $\Rightarrow n \approx 3$. Thus,the complex $[MCl_{4}]^{2-}$ has $3$ unpaired electrons. In $[MCl_{4}]^{2-}$,the oxidation state of $M$ is $+2$. For $Co^{2+}$ $(Z=27)$,the configuration is $[Ar] 3d^7$. In a tetrahedral field,the $3d^7$ configuration has $3$ unpaired electrons $(t_2^4 e^3)$. $(a)$ $Co = [Ar] 3d^7 4s^2$; $Co^{2+} = [Ar] 3d^7$ ($3$ unpaired electrons). $(b)$ $Cu = [Ar] 3d^{10} 4s^1$; $Cu^{2+} = [Ar] 3d^9$ ($1$ unpaired electron). $(c)$ $Mn = [Ar] 3d^5 4s^2$; $Mn^{2+} = [Ar] 3d^5$ ($5$ unpaired electrons). $(d)$ $Fe = [Ar] 3d^6 4s^2$; $Fe^{2+} = [Ar] 3d^6$ ($4$ unpaired electrons). Therefore,the element $M$ is $Co$.

For a tetrahedral complex $[MCl_{4}]^{2-}$,the spin-only magnetic moment is $3.83 \ BM$. The element $M$ is

Similar Questions

$A$ compound of a metal ion $M^{x+}$ $(Z = 24)$ has a spin-only magnetic moment of $\sqrt{15} \ BM$. The number of unpaired electrons in the compound is:

The one that is not expected to show isomerism is:

For the tetrahedral complex $[MnBr_4]^{2-}$, the spin-only magnetic moment value is $....$ (At. no. of $Mn = 25$) (in $BM$)

The number of possible optical isomers for the complexes $MA_{2}B_{2}$ with $sp^{3}$ and $dsp^{2}$ hybridised metal atom,respectively,is.
Note : $A$ and $B$ are unidentate neutral and unidentate monoanionic ligands,respectively.

The magnetic moment of $[Fe(H_2O)_6]^{3+}$ is $5.92 \ BM$,whereas the magnetic moment of $[Fe(CN)_6]^{3-}$ is $1.74 \ BM$. Explain why.

Vedclass Test Series

Exam Paper Generator

Online Exam Module