Bromine is a non-metal. The symbol for bromine is Br, and its atomic number is 35. It's electron configuration is 2, 8, 18, 7 with the last 7 electrons being the valence electrons.
Bromine is classified as a halogen, and it is placed in period 4 and group 17 of the periodic table of elements. The atomic weight of bromine is 79.904 atomic mass units. The density of bromine is 3.119 grams per cubic centimeters.
Bromine is a reddish-brown liquid at room temperature. As a solid, it is red-brown in color and has a metallic shine. The melting point of bromine is 19 degrees Fahrenheit, and its boiling point is 138 degrees Fahrenheit.