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Because apparently "they're important."
Chemistry
Molecular & Ionic Compounds
IB Chemistry (HL)
Atomic Structure
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Ammonium
(NH4)+
Carbonate
(CO3)2-
Dichromate
(Cr2O7)2-
Hydrogen Carbonate
(HCo3)-
Hydronium
(H30)+
Hydroxide
(OH)-
Nitrate
(NO3)-
Permanganate
(MnO4)-
Phosphate
(PO4)3-
Sulfate
(SO4)2-
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