Brom

35
Br
Skupina
17
Perioda
4
Blok
p
Protons
Electrons
Neutrons
35
35
45
General Properties
Vrstno število
35
Atomska teža
79,904
Mass Number
80
Kategorija
Halogeni
Barva
Rdeča
Radioactive
Ne
From the Greek word bromos, stench
Kristalna struktura
Osnovno centrirana ortorombska
Zgodovina
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.
Electrons per shell
2, 8, 18, 7
Razporeditev elektronov
[Ar] 3d10 4s2 4p5
Br
Bromine is the only nonmetallic element that is liquid at ordinary temperatures
Physical Properties
Faza snovi
Tekočina
Gostota
3,122 g/cm3
Tališče
265,95 K | -7,2 °C | 19,04 °F
Vrelišče
331,95 K | 58,8 °C | 137,84 °F
Talilna toplota
5,8 kJ/mol
Izparilna toplota
14,8 kJ/mol
Toplotna kapaciteta
0,474 J/g·K
Abundance in Earth's crust
0,0003%
Abundance in Universe
7×10-7%
Pure
Zasluge za slike: Images-of-elements
Pure liquid bromine
CAS Number
7726-95-6
PubChem CID Number
24408
Atomic Properties
Atomski polmer
120 pm
Kovalentni polmer
120 pm
Elektronegativnost
2,96 (Paulingova lestvica)
Ionization Potential
11,8138 eV
Atomic Volume
23,5 cm3/mol
Toplotna prevodnost
0,00122 W/cm·K
Oksidacijska stanja
-1, 1, 3, 4, 5, 7
Applications
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.
Bromine is poisonous and causes skin burns
Isotopes
Stable Isotopes
79Br, 81Br
Unstable Isotopes
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