The oxidation states of \( \mathrm{Cr} \) in \( \left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}....

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The oxidation states of \( \mathrm{Cr} \) in \( \left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{3} \), \( \left[\mathrm{Cr}\left(\mathrm{C}_{6} \mathrm{H}_{6}\right)_{2}\right] \), and \( \mathrm{K}_{2}\left[\mathrm{Cr}(\mathrm{CN})_{2}(\mathrm{O})_{2}\left(\mathrm{O}_{2}\right)\left(\mathrm{NH}_{3}\right)\right] \)
\( \mathrm{P} \)
respectively are:
(1) +3 , 0 , and +6
(2) \( +3,0 \), and +4
(3) \( +3,+4 \), and +6
(4) \( +3,+2 \), and +4


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