The oxidation state of cobalt in the complex compound \( \left[\mat...

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The oxidation state of cobalt in the complex compound \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3} \) is
P
(1) \( +3 \)
(2) \( +6 \)
WV
(3) \( +5 \)
(4) \( +2 \)
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