Number of identical Cr-O bonds in dichromate ion $C r_{2} O_{7}^{2 -}$ is :

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Solution

The correct option is B 6
The correct answer is - There are '6' identical Cr - O bonds in the dichromate ion $(C r_{2} O_{7}^{- 2}) .$

In a dichromate ion $(C r_{2} O_{7}^{- 2}) .$ , there are 6 terminal Cr – O bonds. All these bonds are equivalent due to resonance.

The Dichromate ions $(C r_{2} O_{7}^{- 2}) .$ are oxoanions of chromium in the oxidation state +6.
Hence option B is correct answer.

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Number of $C r - O$ bonds in dichromate ion $(C r_{2} O_{7}^{2 -})$ is:

{C r_{2} O_{7}}^{2 -}

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K_{2} {C r}_{2} O_{7}

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