Co-ordination number and oxidation state of \( \mathrm{Cr} \) in \( \mathrm{K}_{3}\left[\mathrm{...

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Co-ordination number and oxidation state of \( \mathrm{Cr} \) in \( \mathrm{K}_{3}\left[\mathrm{Cr}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right] \) are, respectively:
(A) 3 and \( +3 \)
(B) 3 and 0
(C) 6 and \( +3 \)
(D) 4 and \( +2 \)
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