Brom

35
Br
Golongan
17
Periode
4
Blok
p
Proton
Elektron
Neutron
35
35
45
Sifat Umum
Nomor atom
35
Massa atom
79,904
Nomor massa
80
Kategori
Halogen
Warna
Merah
Radioaktif
Tidak
From the Greek word bromos, stench
Struktur kristal
Ortorombik Berpusat-dasar
Sejarah
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.
Elektron per kulit
2, 8, 18, 7
Konfigurasi elektron
[Ar] 3d10 4s2 4p5
Br
Bromine is the only nonmetallic element that is liquid at ordinary temperatures
Sifat Fisika
Fase
Liquid
Kepadatan
3,122 g/cm3
Titik lebur
265,95 K | -7,2 °C | 19,04 °F
Titik didih
331,95 K | 58,8 °C | 137,84 °F
Kalor peleburan
5,8 kJ/mol
Kalor penguapan
14,8 kJ/mol
Kapasitas kalor molar
0,474 J/g·K
Kelimpahan di kerak bumi
0,0003%
Kelimpahan di alam semesta
7×10-7%
Pure
Kredit Gambar: Images-of-elements
Pure liquid bromine
Nomor CAS
7726-95-6
PubChem CID Number
24408
Sifat Atom
Jari-jari atom
120 pm
Jari-jari kovalen
120 pm
Elektronegativitas
2,96 (Skala Pauling)
Potensi Ionisasi
11,8138 eV
Volume atom
23,5 cm3/mol
Kondusivitas termal
0,00122 W/cm·K
Bilangan oksidasi
-1, 1, 3, 4, 5, 7
Aplikasi
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
Isotop
Isotop stabil
79Br, 81Br
Isotop tidak stabil
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