Sodium
Na+
Lithium
Li+
Potassium
K+
Caesium
Cs+
Silver
Ag+
Copper (I)
Cu+
Ammonium
N(H4)+
Magnesium
Mg2+
Calcium
Ca2+
Barium
Ba2+
Iron (II)
Fe2+
Nickel
Ni2+
Chromium (II)
Cr2+
Copper (II)
Cu2+
Zinc
Zn2+
Tin (II)
Sn2+
Lead (II)
Pb2+
Manganese (II)
Mn2+
Mercury (II)
Hg2+
Strontium
Sr2+
Aluminum
Al3+
Chromium (III)
Cr3+
Iron (III)
Fe3+
Cations
Metals which loose electrons.