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, which is 7 in the outermost shell.
Related: electron configuration, the Bohr model, valence electrons.
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
Bromine: frequently asked questions
- What is Bromine?
- Bromine (Br) is the chemical element with atomic number 35. It is a nonmetal (diatomic nonmetal).
- What is the atomic number of Bromine?
- Bromine's atomic number is 35, which means every Bromine atom has 35 protons in its nucleus.
- What is the electron configuration of Bromine?
- The electron configuration of Bromine is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5 (noble-gas shorthand: [Ar] 3d10 4s2 4p5). Its electrons are arranged in shells of 2, 8, 18, 7, with 7 in the outermost shell.
- Is Bromine a metal or a nonmetal?
- Bromine is a nonmetal (diatomic nonmetal).
- What group and period is Bromine in?
- Bromine is in group 17 and period 4 of the periodic table.
- Is Bromine a solid, liquid, or gas?
- At room temperature, Bromine is a liquid.
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.