NH4+
ammonium
Cu+
copper(I)
Cu2+
copper(II)
Fe2+
iron(II)
Pb2+
lead(II)
Hg2^2+
mercury(I)
Hg2+
mercury(II)
Sn2+
tin(II)
Fe3+
iron(III)
Pb4+
lead(IV)
Sn4+
tin(IV)
How are simple cations named
Usually just name of the element but when they form more than one type, Roman Numeral is needed
How are simple anions named
The name of the element but ending in -ide