(CO3)2-
Insoluble (Carbonate)
Exceptions: 1A, NH4+
S2-
Insoluble
Sulfide
Exceptions: Ca2+, Group 1A, Sr2+, Ba+2, NH4+
(PO4)3-
Insoluble
Exceptions: NH4+, Group 1A
OH-
Insoluble
Exceptions: Group 1A, NH4+, Ca, Sr, Ba
Cl-, Br-, I-
Soluble (Halide)
Exceptions: Ag+, Hg2 2+, Pb2+
NO3 2-
Soluble
ClO4-
Perchlorate
Soluble
CH3CO2
Acetate
Soluble
(SO4) 2-
Soluble
Exceptions: Sr, Ba, Hg2 2+, Pb2+