OLD SCHOOL NAMING (based on Latin, and the common forms of the ions) 

Symbol  Systematic Name     Common Name     
Cu+     copper(I) ion       cuprous ion     
Cu2+	copper(II) ion      cupric ion      
Fe2+	iron(II) ion        ferrous ion     
Fe3+	iron(III) ion       ferric ion      
Sn2+	tin(II) ion         stannous ion    
Sn4+	tin(IV) ion         stannic ion     
Cr2+	chromium(II) ion    chromous ion    
Cr3+	chromium(III) ion   chromic ion    
Mn2+	manganese(II) ion   manganous ion   
Mn3+	manganese(III) ion  manganic ion    
  
Symbol	Systematic Name     Common Name  
Hg22+	mercury(I) ion      mercurous ion  
Hg2+	mercury(II) ion     mercuric ion
Pb2+	lead(II) ion        plumbous ion 
Pb4+	lead(IV) ion        plumbic ion
Co2+	cobalt(II) ion	    cobaltous ion
Co3+	cobalt(III) ion     cobaltic ion
Ni2+	nickel(II) ion      nickelous ion
Ni4+	nickel(IV) ion      nickelic ion 
Ti3+	titanium(III) ion   titanous ion
Ti4+	titanium(IV) ion    titanic ion