In chromyl chloride |d and f Block Elements |JEE-MAIN 2023

JEE MAIN 2023

08-04-2023

Question

In chromyl chloride, the number of d-electrons present on chromium is same as in (Given atomic no. Jii 22, Vii 23, Cri 24, Mni 25, Fe 26)

Select the correct option:

Ti (III)

Fe (III)

(IV)

Mn (VII)

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Sol. In $\mathrm{CrO}_2 \mathrm{Cl}_2$ oxidation state of Cr is +6 $$ \begin{aligned} & \mathrm{Cr}(\mathrm{VI})=[\mathrm{Ar}]^{18} 3 \mathrm{~d}^0 \\ & \mathrm{Mn}(\mathrm{VII})=[\mathrm{Ar}]^{18} 3 \mathrm{~d}^0 \\ & \mathrm{Fe}(\mathrm{III})=[\mathrm{Ar}]^{18} 3 \mathrm{~d}^5 \\ & \mathrm{Ti}(\mathrm{III})=[\mathrm{Ar}]^{18} 3 \mathrm{~d}^1 \\ & \mathrm{~V}(\mathrm{IV})=[\mathrm{Ar}]^{18} 3 \mathrm{~d}^1 \end{aligned} $$ Hence $\mathrm{Cr}(\mathrm{VI})$ and $\mathrm{Mn}(\mathrm{VII})$ have same $\mathrm{d}^{\circ}$ configuration.

Question Tags

JEE Main

Chemistry

Easy

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