Name: Bromine
Symbol: Br
Atomic Number: 35
AtomicWeight: 79.904000
Family: halogens
CAS RN: 7726-95-6
Description: A heavy, volatile, reddish-brown liquid
State (25 °C): Liquid
Melting Point: 266 °K
Boiling Point: 332 °K
Density: 3.122 g/cm³
Oxidation states: +1,+5,-1
Electron Configuration: [Ar] 3d¹⁰4s²4p⁵
Radius: 115 pm (Covalent)
Electronegativity: 2.96 (Pauling Scale)

1st Ionization Energy: 1140 KJ/mole
2nd Ionization Energy: 2103 KJ/mole
3rd Ionization Energy: 3470 KJ/mole