Brom
35
Br
Gruppe
17
Periode
4
Blokk
p
Proton
Elektron
Nøytron
35
35
45
Generelle eigenskapar
Atomnummer
35
Atommasse
79,904
Massetal
80
Kategori
Halogen
Farge
Raud
Radioaktiv
Nei
From the Greek word bromos, stench
Krystallstruktur
Basesentrert ortorombisk
Historie
Carl Jacob Löwig discovered bromine in 1825, while still a chemistry student at Heidelberg University, Germany.
Antoine Balard distilled the bromine from a solution of seaweed ash saturated with chlorine in 1824.
He finally published his results in 1826, providing evidence that the substance he had discovered was a new element.
Antoine Balard distilled the bromine from a solution of seaweed ash saturated with chlorine in 1824.
He finally published his results in 1826, providing evidence that the substance he had discovered was a new element.
Elektron per energinivå
2, 8, 18, 7
Elektronkonfigurasjon
[Ar] 3d10 4s2 4p5
Bromine is the only nonmetallic element that is liquid at ordinary temperatures
Fysiske eigenskapar
Tilstandsform
Væske
Tettleik
3,122 g/cm3
Smeltepunkt
265,95 K | -7,2 °C | 19,04 °F
Kokepunkt
331,95 K | 58,8 °C | 137,84 °F
Smeltevarme
5,8 kJ/mol
Fordampingsvarme
14,8 kJ/mol
Spesifikk varmekapasitet
0,474 J/g·K
Førekomst i jordskorpa
0,0003%
Førekomst i universet
7×10-7%
CAS-nummer
7726-95-6
PubChem CID-nummer
24408
Atom eigenskapar
Atomradius
120 pm
Kovalent radius
120 pm
Elektronegativitet
2,96 (Paulings skala)
Ioniseringspotensial
11,8138 eV
Molart volum
23,5 cm3/mol
Termisk konduktivitet
0,00122 W/cm·K
Oksidasjonstrinn
-1, 1, 3, 4, 5, 7
Bruksområde
Bromine is used in making fumigants, flameproofing agents, water purification compounds, dyes, medicines and sanitizers.
Potassium bromide is used as a source of bromide ions for the manufacture of silver bromide for photographic film.
Bromine is also used to reduce mercury pollution from coal-fired power plants.
Potassium bromide is used as a source of bromide ions for the manufacture of silver bromide for photographic film.
Bromine is also used to reduce mercury pollution from coal-fired power plants.
Bromine is poisonous and causes skin burns
Isotopar
Stabile isotopar
79Br, 81BrUstabile isotopar
67Br, 68Br, 69Br, 70Br, 71Br, 72Br, 73Br, 74Br, 75Br, 76Br, 77Br, 78Br, 80Br, 82Br, 83Br, 84Br, 85Br, 86Br, 87Br, 88Br, 89Br, 90Br, 91Br, 92Br, 93Br, 94Br, 95Br, 96Br, 97Br