For the complex \( \left[\mathrm{Cr}\left(\mathrm{C}_{2} \mathrm{O}... VIDEO
For the complex \( \left[\mathrm{Cr}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\right]^{-} \), the oxidation number of \( \mathrm{Cr} \) is and the coordination number
\( \mathrm{P} \) of \( \mathrm{Cr} \) is
WV
(1) \( +3,6 \)
(2) \( +3,4 \)
(3) \( +2,6 \)
(4) \( +2,4 \)
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