Chemical reactions of the elements

Reaction of astatine with air

Reaction of astatine with water

Reaction of astatine with the halogens

Astatine, At2, reacts with bromine, Br2, or iodine, I2, to form the "interhalogen" species AtBr and AtI respectively. Both of these dissolve in carbon tetrachloride, CCl4.

At2 + Br2 → 2AtBr

At2 + I2 → 2AtI

Reaction of astatine with acids

Astatine dissolves in dilute nitric acid, HNO3, or dilute hydrochloric acid, HCl.

Reaction of astatine with bases

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astatine atomic number