H+
hydrogen
Li+
lithium
Na+
sodium
K+
potassium
Ag+
silver
Cu+
copper (I)
NH4+
ammonium
H3O+
hydronium
Hg2^2+
mercury(I)
Cu2+
copper(II)
Co2+
cobalt(II)
Cr2+
chromium(II)
Cd2+
cadmium
Ni2+
nickel
Mn2+
manganese
Hg2+
mercury(II)
Fe2+
iron(II)
Zn2+
zinc(II)
Pb2+
lead(II)
Sn2+
tin(II)
Ba2+
barium
Sr2+
strontium
Ca2+
calcium
Mg2+
magnesium