NH4+ and group one metals
Cations that are always soluble
Nitrates, Acetates, Chlorates, and Perchlorates
Anions that are always soluble
Chlorides, Bromides, Iodides, and Sulfates
Anions that are mostly soluble
Silver, mercury, and lead
Cations that are not soluble for Cl, Br, and I
Calcium, Strontium, Barium, and Lead
Cations that are not soluble for sulfates
Phosphates, carbonates, oxalates, oxides, sulfides, and hydroxides
Anions that are not soluble except for always soluble cations
Magnesium, calcium, and barium
Cations that make sulfides slightly soluble
Strontium, barium, and calcium
Cations that make hydroxides slightly soluble
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