Which of the following statements is correct?

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(A) $1$. $KMnO_4$ is intensely colored due to $L \rightarrow M$ (Ligand to Metal) charge transfer,where electrons transfer from $O^{2-}$ to $Mn^{7+}$.

Vedclass · Accepted Answer

$KMnO_4$ is violet/purple/dark pink due to $L \rightarrow M$ charge transfer.

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(A) $1$. $KMnO_4$ is intensely colored due to $L \rightarrow M$ (Ligand to Metal) charge transfer,where electrons transfer from $O^{2-}$ to $Mn^{7+}$. This is correct.$2$. $TiF_6^{3-}$ $(d^1)$ is colored due to $d-d$ transition,and $Cu_2Cl_2$ is colorless due to $d^{10}$ configuration. This is incorrect.$3$. $AgCl$ is white (colorless) and $CrO_2Cl_2$ is colored due to charge transfer,not just polarization. This is incorrect.$4$. The crystal field splitting energy $\Delta_o$ for $NH_3$ is greater than $H_2O$. Since $E = hc/\lambda$,a higher $\Delta_o$ corresponds to a lower $\lambda$. Thus,$[Co(H_2O)_6]^{2+}$ absorbs at a higher $\lambda$ than $[Co(NH_3)_6]^{2+}$. This is correct.Note: Both $A$ and $D$ are scientifically correct statements.

Column-$1$ (Reaction)	Column-$2$ (Main product)
$A$. $4FeCl_3 + 3K_4[Fe(CN)_6] \rightarrow$	$I$. $Fe_4[Fe(CN)_6]_3$
$B$. $ZnCl_2 + 4NaOH \rightarrow$	$V$. $Na_2ZnO_2$
$C$. $2FeCl_3 + H_2S \rightarrow$	$II$. $FeCl_2$

Similar Questions

The colour of $CuCr_2O_7$ solution in water is green because

The volume (in $mL$) of $0.125\; M\; AgNO_{3}$ required to quantitatively precipitate chloride ions in $0.3\; g$ of $[Co(NH_{3})_{6}]Cl_{3}$ is (Given: $M_{[Co(NH_{3})_{6}]Cl_{3}} = 267.46\; g/mol$,$M_{AgNO_{3}} = 169.87\; g/mol$).

Which of the following compounds is brown coloured?

Match the following:
Column-$1$ (Reaction) Column-$2$ (Main product)
$A$. $4FeCl_3 + 3K_4[Fe(CN)_6] \rightarrow$ $I$. $Fe_4[Fe(CN)_6]_3$
$B$. $ZnCl_2 + 4NaOH \rightarrow$ $V$. $Na_2ZnO_2$
$C$. $2FeCl_3 + H_2S \rightarrow$ $II$. $FeCl_2$

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