35 Br 79.904
Bromine
diatomic nonmetal
Properties
- Atomic number
- 35
- Atomic mass
- 79.904 u
- Category
- diatomic nonmetal
- Group
- 17
- Period
- 4
- Block
- p-block
- State (room temp)
- Liquid
- Outer-shell electrons
- 7
- Electronegativity
- 2.96 (Pauling)
- Density
- 3.1028 g/cm³
- Melting point
- -7.35 °C
- Boiling point
- 58.85 °C
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵
Noble-gas shorthand: [Ar] 3d¹⁰ 4s² 4p⁵
Electrons per shell: 2, 8, 18, 7 — that's 7 in the outermost shell.
About Bromine
Bromine (from Ancient Greek:βρῶμος, brómos, meaning "stench") is a chemical element with symbol Br, and atomic number 35. It is a halogen. The element was isolated independently by two chemists, Carl Jacob Löwig and Antoine Jerome Balard, in 1825–1826.
- Discovered by Antoine Jérôme Balard
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.