
Bromine (Br) is a chemical element of the periodic table, located in the group 17 and the period 4, and has the atomic number 35. It is a reddish-brown liquid, whose name comes from the Greek word “bromos”, which means stench. It is a reactive nonmetal and is the third lightest halogen, after the chlorine element.
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– p block |
FAQs on Bromine Element
Bromine |
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‣ What does bromine look like? Appearance: reddish-brown |
‣ Who discovered bromine? When was bromine discovered? Discovery and first isolation: Antoine Jerome Balard and Carl Jacob Lowig (1825) |
‣ Where is bromine located on the periodic table?![]() Location: Bromine is found in the fourth row of the periodic table, next to the selenium element. |
‣ What is the atomic number of bromine? Atomic number (Z): 35 |
‣ What is bromine symbol? Symbol: Br |
‣ What is the atomic weight of bromine? Standard atomic weight: [79.901, 79.907] conventional: 79.904 |
‣ What block is bromine in the periodic table? Block: p-block |
‣ What group does bromine belong to? Group: 17 (halogens) |
‣ Which period does bromine belong to? Period: 4 |
‣ What is the atomic radius of bromine? Atomic radius: empirical: 120 pm |
‣ Bromine covalent radius: 120±3 pm |
‣ Bromine Van der Waals radius: 185 pm |
‣ What is bromine melting point? Melting point: (Br2) 265.8 K (-7.2 °C, 19 °F) |
‣ What’s the boiling point of bromine? Boiling point: (Br2) 332.0 K (58.8 °C, 137.8 °F) |
‣ Bromine critical point: 588 K, 10.34 MPa |
‣ Bromine triple point: 265.90 K, 5.8 kPa |
‣ How many electron shells does bromine have? Electrons per shell: 2, 8, 18, 7 |
‣ What is the ground state electron configuration for bromine? Electron configuration: [Ar] 3d10 4s2 4p5 |
‣ What is the ionization energy of bromine? Ionization energies: 1st: 1139.9 kJ/mol 2nd: 2103 kJ/mol 3rd: 3470 kJ/mol |
‣ What is the state of bromine at room temperature? Phase (at r.t): liquid |
‣ What is bromine density? Density (near r.t): Br2, liquid: 3.1028 g/cm3 |
‣ Bromine magnetic ordering: diamagnetic |
‣ Bromine natural occurrence: primordial |
‣ What is the oxidation state of bromine? Oxidation state: -1 |
‣ What is the electronegativity of bromine? Electronegativity: Pauling scale: 2.96 |
‣ Bromine heat of fusion: (Br2) 10.571 kJ/mol |
‣ Bromine heat of vaporization: (Br2) 29.96 kJ/mol |
‣ Bromine molar heat capacity: (Br2) 75.69 J/(mol K) |
‣ Bromine molar magnetic susceptibility: -56.4 × 10-6 cm3/mol |
‣ Speed of sound in bromine: 206 m/s (at 20 °C) |
‣ What is the crystal structure of bromine? Crystal structure: orthorhombic |
‣ Thermal conductivity of bromine: 0.122 W/(m.K) |
‣ Bromine electrical resistivity: 7.8 × 1010 Ω.m (at 20 °C) |
‣ Bromine CAS number: 7726-95-6 |
‣ Bromine vapor pressure
Vapor pressure | ||||||
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P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
at T (K) | 185 | 201 | 220 | 244 | 276 | 332 |
‣ How many isotopes does bromine have?
Main isotopes of bromine | ||||
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Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
79Br | 51 % | stable | ||
81Br | 49 % | stable |
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