Engineering
Chemistry
Dichromate and Permanganate Ion Reactions
Isomerism in Coordination Compounds
Resonance
Question
Number of identical Cr-O bonds in dichromate ion Cr2O72− is :
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Solution
The correct answer is - There are '6' identical Cr – O bonds in the dichromate ion (Cr2O7–2)
In a dichromate ion (Cr2O7–2), there are 6 terminal Cr – O bonds. All these bonds are equivalent due to resonance.
The Dichromate ions (Cr2O7–2) are oxoanions of chromium in the oxidation state +6.
Hence option B is correct answer.
