\( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \) in acidic mediu...

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\( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \) in acidic medium converts into:-
P
(1) \( \mathrm{Cr}^{2+} \)
(2) \( \mathrm{Cr}^{3+} \)
W
(3) \( \mathrm{Cr}^{4+} \)
(4) \( \mathrm{Cr}^{+5} \)
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