Palladium

Palladium can be brought to react with oxygen, O₂, by heating the palladium.

2 Pd(s) + O₂(g) PdO(s) [black]

Palladium will react with F₂, Cl₂ and Br₂ forming palladium halides.

For fluorine, at mixture of Pd(II) and Pd(IV) is formed, and not Pd(III) as one could be led to believe:

2 Pd(s) + 3 F₂(g) [Pd(II)Pd(IV)F₆](s)


For chlorine, Pd(II)chloride is formed. Depending on the reaction conditions, two different forms are produced.

Pd(s) + Cl₂(g) PdCl₂(s)


For bromine, Pd(II)bromide is formed.

Pd(s) + Br₂(g) PdBr₂(s) [red-black]