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The oxoanion which contains all equivale...

The oxoanion which contains all equivalent M-O bond is
`I) CrO_(4)^(2-)" "II)MnO_(4)^(-)" "III)Cr_(2)O_(7)^(2-)`

A

III only

B

I,II,III

C

I,II

D

I only

Text Solution

Verified by Experts

The correct Answer is:
C

due to resonance all `M-O` bonds are equivalent.
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