monatomic d-block and p-block cations with variable charges

chromium (II)

Cr²⁺

chromium (III)

Cr³⁺

manganese (II)

Mn²⁺

manganese (III)

Mn³⁺

iron (II)

Fe²⁺

iron (III)

Fe³⁺

cobalt (II)

Co²⁺

cobolt (III)

Co³⁺

nickel (II)

Ni²⁺

nickel (III)

Ni³⁺

gold (I)

Au⁺

gold (III)

Au³⁺

copper (I)

Cu⁺

copper (II)

Cu²⁺

mercury (I)

Hg₂²⁺

mercury (II)

Hg²⁺

tin (II)

Sn²⁺

tin (IV)

Sn⁴⁺

lead (II)

Pb²⁺

lead (IV)

Pb⁴⁺

bismuth (III)

Bi³⁺

bismuth (V)

Bi⁵⁺