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Find out the incorrect statement among the
\( \mathrm{P} \) following.

W
(1) \( \mathrm{Mn}^{3+} \) and \( \mathrm{Co}^{3+} \) ions are strongest oxidizing agents in aqueous solution.
(2) \( \mathrm{Ti}^{2+}, \mathrm{V}^{2+} \) and \( \mathrm{Cr}^{2+} \) are strong reducing agents.
(3) \( \mathrm{Fe}^{2+} \) is stronger reducing agent than \( \mathrm{Cr}^{2+} \).
(4) \( \mathrm{Cu} \) can liberate \( \mathrm{H}_{2} \) from reducing acids.
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