Which of the following is correct about \( \mathrm{Cr}-\mathrm{O} \) bonds in \( \mathrm{Cr}_{2}....

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Which of the following is correct about \( \mathrm{Cr}-\mathrm{O} \) bonds
\( \mathrm{P} \)
in \( \mathrm{Cr}_{2} \mathrm{O}_{7}{ }^{2-} \) ion?
(1) All \( \mathrm{Cr}-\mathrm{O} \) bonds are equivalent.
(2) \( 4 \mathrm{Cr}-\mathrm{O} \) bonds are equivalent.
(3) \( 6 \mathrm{Cr}-\mathrm{O} \) bonds are equivalent
(4) None of the above


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