Common Type II Cations

Iron (III) or Ferric

Fe³⁺

Iron (II) or Ferrous

Fe²⁺

Copper (II) or Cupric

Cu²⁺

Copper (I) or Cuprous

Cu⁺

Cobalt (III) or Cobaltic

Co³⁺

Cobalt (II) or Cobaltous

Co²⁺

Tin (IV) or Stannic

Sn⁴⁺

Tin (II) or Stannous

Sn²⁺

Lead (IV) or Plumbic

Pb⁴⁺

Lead (II) or Plumbous

Pb²⁺

Mercury (II) or Mercuric

Hg²⁺

Mercury (I) or Mercurous

Hg₂²⁺ _{—> always diatomic}