Бром

35
Br
Група
17
Периода
4
блок
p
Protons
Electrons
Neutrons
35
35
45
Општи Својства
Атомски број
35
Атомска тежина
79,904
Mass Number
80
Category
Халогени
Color
Red
Radioactive
Не
From the Greek word bromos, stench
Кристална структура
Base Centered Orthorhombic
History
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
Електронска конфигурација
[Ar] 3d10 4s2 4p5
Br
Bromine is the only nonmetallic element that is liquid at ordinary temperatures
Физички Својства
Фаза
Liquid
Густина
3,122 g/cm3
Точка на топење
265,95 K | -7,2 °C | 19,04 °F
Точка на вриење
331,95 K | 58,8 °C | 137,84 °F
Топлина на топење
5,8 kJ/mol
Топлина на испарување
14,8 kJ/mol
Specific Heat Capacity
0,474 J/g·K
Abundance in Earth's crust
0,0003%
Abundance in Universe
7×10-7%
Pure
Кредити на слика: Images-of-elements
Pure liquid bromine
CAS Number
7726-95-6
PubChem CID Number
24408
Атомски Својства
Атомски полупречник
120 pm
Ковалентен полупречник
120 pm
Електронегативност
2,96 (Полингова скала)
Ionization Potential
11,8138 eV
Atomic Volume
23,5 cm3/mol
Thermal Conductivity
0,00122 W/cm·K
Oxidation States
-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