ion and systematic name

Cu^+

copper (1) ion

 

cuprous ion

Cu^2+

copper(2) ion

 

cupric ion

Fe^2+

Iron (2) ion

 

ferrous ion

Fe^3+

iron(3) ion

 

ferric ion

Hg^+

mercury(1) ion

 

mercurous ion

Hg^2+

mercury(2) ion

 

mercuric ion

Sn^2+

Tin(2) ion

 

stannous ion

Sn^4+

Tin(4) ion

 

stannic ion

Pb^2+

lead(2) ion

 

plumbous

Pb^4+

Lead(2) ion

 

plumbic ion