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Chemistry
The pair of compounds having metals in their highest oxidation state is :
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Q. The pair of compounds having metals in their highest oxidation state is :
JEE Main
JEE Main 2017
The d-and f-Block Elements
A
$[\ce{MnO_4}]^-$ and $\ce{CrO_2 Cl_2}$
61%
B
$\ce{ [NiCl4]^{2-}}$ and $\ce{[CoCl4]^{2-}}$
9%
C
$\ce{[Fe(CN)6]^{3-}}$ and $\ce{[Cu(CN)4]^{2-}}$
20%
D
$\ce{[FeCl4]^{-}}$ and $\ce{Co2O3}$
10%
Solution:
The highest $Mn$ oxidation state is $+7$ found in $MnO _{4}^{-}$.
$Cr$ exhibits its highest oxidation state of $+6$ in $CrO _{2} Cl _{2}$.