Tentukan biloks pada :
1. P dalam H3PO4
2. Cl dalam KClO3
3. C dalam C2O4^2-
4. Mn dalam MnO4^2-
5. S dalam Al2(SO4)2-
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2.KClO3 -> +1+Cl+(-6) = 0 -> Cl = +5
3.C2O4^2- ->C2+(-8) = -2 -> C2 = +6 -> C = +3
4.MnO4^2- -> Mn+(-8) = -2 -> Mn = +6
5.Al2(SO4)2- ->+6+S2+(-8) = -1 -> S2 = +1 -> S = 0,5