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valencia +3
U2(Cr2O7)3 = dicromato de uranio (III)
valencia +4
U2(Cr2O7)4 = U(Cr2O7)2 = dicromato de uranio (IV)
valencia +5
U2(Cr2O7)5 = dicromato de uranio (V)
valencia +6
U2(Cr2O7)6 = U(Cr2O7)3 = dicromato de uranio (VI)