35
79.90
Br
Bromine
Identification
CAS Number: 7726-95-6
Discovery Year: 1826
Discoverer: Antoine J. Balard
Discovery Location: France
Properties
Atomic Dimensions
Atomic Radius: 115 pm →
Atomic Radius (Rahm): 219 pm
Covalent Radius: 120 pm →Van der Waals Radius: 185 pm
Atomic Volume: 23.5 cm³/mol
Lattice Constant: 6.67 Å
Thermodynamics
Electronic Structure
Electron Config: [Ar] 3d10 4s2 4p5
Block: p
Period: 4 →Group: 17 →Electronegativity: 2.96 →Electron Affinity: 3.3635882000000006 eV →Oxidation States: -1, +1, +3, +5, +7
Abundance & Geochemistry
Crust Abundance: 2.4 mg/kg
Sea Abundance: 67.3 mg/L
Geochemical Class: semi-volatile
Goldschmidt Class: litophile
About
Halogen element. Red volatile liquid at room temperature. Its reactivity is somewhere between chlorine and iodine. Harmful to human tissue in a liquid state, the vapour irritates eyes and throat. Discovered in 1826 by Antoine Balard.
Isotopes
Br-79 79 50.50%
Br-81 81 49.20%
