Bromine ($\mathrm{Br}$)

Bromine is the chemical element with atomic number 35 and symbol $\mathrm{Br}$. It is a halogen. Its elemental form is the reddish-brown molecular liquid $\mathrm{B}{\mathrm{r}}_2$ near room temperature. Bromide is instead the anion $\mathrm{B}{\mathrm{r}}^{-}$, so the element and its reduced ionic form have very different chemical behavior.^[ref]