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Chemical element: Bromine (Br)
| Atomic Number: | 35 |
| Element Symbol: | Br |
| Element Name: | Bromine |
| Atomic Weight: | 79.904 |
| Group Number: | 17 |
| Group Name: | Halogen |
| Period Number: | 4 |
| Block: | p-block |
| Ground State Configuration: | [Ar] 3d10 4s2 4p5 |
| Ground State Level: | 2Po3/2 |
| Standard State: | Liquid |
| Common Valences: | 1,3,5,7 |
| Bond Length: | 228.4 |
| Atomic Radius Empirical: | 115 |
| Atomic Radius Calculated: | 94 |
| Covalent Radius Empirical: | 114 |
| Vander Waals Radius: | 185 |
| Electron Affinity: | 324.6 |
| First Ionization Energy: | 1139.9 |
| Pauling Electronegativity: | 2.96 |
| Sanderson Electronegativity: | 3.22 |
| Allred Rochow Electronegativity: | 2.74 |
| Mulliken Jaffe Electronegativity: | 2.95 |
| Allen Electronegativity: | 2.685 |
| Molar Volume: | 19.78 |
| Bulk Modulus: | 1.9 |
| Electrical Resistivity: | > 10**18 |
| Refractive Index: | 1.001132 |
| Melting Point: | -7.3 |
| Boiling Point: | 59 |
| Critical Temperature: | 313 |
| Thermal Conductivity: | 0.12 |
| Enthalpy Of Fusion: | 5.8 (per mol Br atoms) |
| Enthalpy Of Vaporization: | 14.8 (per mole Br atoms) |
| Enthalpy Of Atmization: | 112 |
| Most Common Oxidation Numbers: | 5,3,1,-1 |
| Color: | Red-brown, metallic lustre when solid |
| Classification: | Non-metallic |
| Discovered By: | Antoine-J. Balard |
| Discovered At: | France |
| Discovered When: | 1826 |
| Origin Of Name: | From the Greek word bromos meaning stench |
Calculate the molecular weight of Bromine or molecular weight Br.
Also see the full list of chemical elements and atomic weights.
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