In which of the following compounds chromium has minimum ionic radius?

C r {C l}_{3}

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C r F_{3}

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{C r}_{2} O_{3}

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{C r}_{2} O_{7}^{2 -}

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Solution

The correct option is D ${C r}_{2} O_{7}^{2 -}$
In dichromate, ${C r}_{2} O_{7}^{2 -}$ , chromium has minimum ionic radius.
Higher is Ox. no. more is effective nuclear charge, lesser is size.

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Similar questions

The ionic radius of Cr is minimum in which of the following compounds?Why?

A)CrO2

B)CrCl2

C)K2CrO4

D)CrF3

{C r}_{2} O_{7}^{2 -} H^{+} - - \to C r

{C r}_{2} O_{7}^{2 -}

U O_{2} + {C r}_{2} O_{7}^{2 -} ⟶ U O_{2}^{2 +} + {C r}^{2 +} + H_{2} O

{C r}_{2} O_{7}^{2 -}

{C r}^{3 +}

{C r}_{2} O_{7}^{2 -}

{C r}^{3 +}

{C r}_{2} O_{7}^{2 -} = x \times

x

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