\( \mathrm{CrO}_{3} \) dissolves in aqueous \( \mathrm{NaOH} \) to ...

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\( \mathrm{CrO}_{3} \) dissolves in aqueous \( \mathrm{NaOH} \) to give
(1) \( \mathrm{Cr}_{2} \mathrm{O}_{7}{ }^{2-} \)
(2) \( \mathrm{CrO}_{4}^{2-} \)
\( \mathrm{P} \)
(3) \( \mathrm{Cr}(\mathrm{OH})_{3} \)
(4) \( \mathrm{Cr}(\mathrm{OH})_{2} \)
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