13 Facts About Bromine

Bromine is a chemical element with the symbol Br and atomic number 35.

Bromine compounds are still used in well drilling fluids, in photographic film, and as an intermediate in the manufacture of organic chemicals.

Bromine was discovered independently by two chemists, Carl Jacob Lowig and Antoine Balard, in 1825 and 1826, respectively.

Bromine was not produced in large quantities until 1858, when the discovery of salt deposits in Stassfurt enabled its production as a by-product of potash.

Bromine is the third halogen, being a nonmetal in group 17 of the periodic table.

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Bromine has the electron configuration [Ar]4s3d4p, with the seven electrons in the fourth and outermost shell acting as its valence electrons.

Bromine is intermediate in reactivity between chlorine and iodine, and is one of the most reactive elements.

Bromine tends to react with compounds including M–M, M–H, or M–C bonds to form M–Br bonds.

Bromine trifluoride is a useful nonaqueous ionising solvent, since it readily dissociates to form and and thus conducts electricity.

Bromine oxides are not as well-characterised as chlorine oxides or iodine oxides, as they are all fairly unstable: it was once thought that they could not exist at all.

Bromine is significantly less abundant in the crust than fluorine or chlorine, comprising only 2.

Bromine is used in cooling towers for controlling bacteria, algae, fungi, and zebra mussels.

Bromine is classified as an extremely hazardous substance in the United States as defined in Section 302 of the U S Emergency Planning and Community Right-to-Know Act, and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities.