Atomic Properties
- Atomic Number
- 35
- Atomic Mass
- 79.9040 u
- Electron Configuration
- [Ar] 3d10 4s2 4p5
- Electronegativity
- 2.96
- Block
- p-block
- Group
- 17
- Period
- 4
Physical Properties
- Phase (STP)
- liquid
- Melting Point
- 265.80 K
- Boiling Point
- 332.00 K
- Density
- 3.1028 g/cm³
About Bromine
One of two liquid elements at room temperature; reddish-brown and toxic.
Isotopes of Bromine
Bromine has 2 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 79Br | 79 | 78.9183376 | 50.69% | Stable |
| 81Br | 81 | 80.9162897 | 49.31% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)