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Bromine Nicole P. P. 9 Atomic Symbol Br Atomic Number 35 Mass Number 79.904 Halogen Family Group 17 Period 4 Nonmetal Liquid at room temperature Melting Point 19.04 F 7.2 C 265.95K Boiling Point 137.8 F 58.8 C 331.85K RedBrown Color Discovered by AntoineJérôme Balard in 1826 in France From the greek word meaning stench, bromos It is mostly obtained by treating wells with chlorine in Michigan and Arkansas Bromine is in a chemical that was added to leaded gasoline but leaded gasoline isn’t used anymore. Also it is in silver bromide which is used for photography. Physical Properties: Bromine evaporates easily and dissolves well in organic liquids Chemical Properties: Bromine is very reactive. It reacts with metals and can be explosive, but it can also react with relatively unreactive metals. http://www.rsc.org/periodictable/element/35/bromine http://education.jlab.org/itselemental/ele035.html http://www.chemistryexplained.com/elements/AC/Bromine.html