Which one the following|d and f Block Elements|JEE-Main 2021

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JEE MAIN 2021

31-08-2021 S2

Question

In which one of the following sets all species show disproportionation reaction ?

Select the correct option:

$\mathrm{ClO}_2^{-}, \mathrm{F}_2, \mathrm{MnO}_4^{-}$and $\mathrm{Cr}_2 \mathrm{O}_7^{2-}$

$\mathrm{Cr}_2 \mathrm{O}_7^{2-}, \mathrm{MnO}_4^{-}, \mathrm{ClO}_2^{-}$andCl $\mathrm{Cl}_2$

$\mathrm{MnO}_4^{-}, \mathrm{ClO}_2^{-}, \mathrm{Cl}_2$ andMn ${ }^{3+}$

$\mathrm{ClO}_4^{-}, \mathrm{MnO}_4^{-}, \mathrm{ClO}_2^{-} \mathrm{andF}_2$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

No option contains all species that show disproportionation reaction. $\mathrm{MnO}_4^{-} \mathrm{Mn}$ is in +7 oxidation state (highest) hence cannot be simultaneously oxidized or reduced.

Question Tags

JEE Main

Chemistry

Easy

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