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+2 MnO +3 KMnO2 +4 MnO2 +7 KMnO4 Mn2O7 採納哦
高錳酸鉀中其化合價為+7,錳的化合價較多,有二氧化錳的+4價,也有錳酸鉀的+6價,通常高錳酸鉀表現為强氧化性,由+7價會變為+2價的錳離子
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