18 In the complex ion [Cr(C₂O₄)₂(H₂O)₂]⁻, the oxidation number of Cr is
(A)+1
(B)+2
(C)+3
(D)+4
(E)+5
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統計: 尚無統計資料
統計: 尚無統計資料
18 In the complex ion [Cr(C₂O₄)₂(H₂O)₂]⁻, the oxidation number of Cr is
(A)+1
(B)+2
(C)+3
(D)+4
(E)+5