25. What is the oxidation state of Cr in \(Cr_2O_7^{2-}\)?
(A)+7
(B)+6
(C)+12
(D)-1
(E)-2
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統計: 尚無統計資料
統計: 尚無統計資料
25. What is the oxidation state of Cr in \(Cr_2O_7^{2-}\)?
(A)+7
(B)+6
(C)+12
(D)-1
(E)-2