Symbol Br Atomic radius: pm 114 Fusion: kJ/Mole 10.57
Name Bromine Ionic radius: pm (-1)196 Boiling point: °C 59
Atomic number 35 Electron affinity 3.36 Melting point: °C -7
Atomic weight 79.90 1st  ion potential 11.81 Specific Heat Cap: J/(g K) 0.23
Classification Non-Metal Natural form Liquid (Br2) Thermal Cond: W/(cm K) 0.001
Configuration [Ar]3d104s2p5 Crystal structure - Electrical Cond -
Oxidation states +/-1,5 Density 3.12 Abundance: mg/kg-crust 2.4
Electronegativity 2.96 Vaporization: kJ/Mole 29.96    
Antoine Jérôme Balard in France first isolated bromine in 1826 from bitterns left after the evaporation of Mediterranean Sea water and recognized it as an element in 1826.  Balard was only 23 years old. Uses - pesticides, photography, fumigants, flameproofing agents, dyes, medicines, water purification