Halogens in space -Bromine

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Bromine (from Greek: βρῶμος, brómos, meaning "stench (of he-goats)") is a chemical element with the symbol Br, and atomic number of 35. It is in the halogen group (17). Elemental bromine is a fuming red-brown liquid at room temperature, corrosive and toxic, with properties between those of chlorine and iodine. Free bromine does not occur in nature, but occurs as colorless soluble crystalline mineral halide salts, analogous to table salt. Bromine has no known essential role in human or mammalian health.

Bromine is rarer than about three-quarters of elements in the Earth's crust; however, the high solubility of bromide ion has caused its accumulation in the oceans, and commercially the element is easily extracted from brine pools, mostly in the United States, Israel and China. About 556,000 tonnes were produced in 2007, an amount similar to the far more abundant element magnesium. Bromine is the 62nd most common element on Earth.
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