Bromo

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Bromine
35Br
Cl

Br

I
seleniumbrominekrypton
Appearance
gas/liquid: red-brown
solid: metallic luster
General properties
Name, simbolo, kaiphan bromine, Br, 35
Pronunciation Plantilya:IPAc-en Plantilya:Respell
or Plantilya:IPAc-en Plantilya:Respell
Element category halogen
Group, period, block 174, p
Standard atomic weight 79.904(1)
Electron configuration [Ar] 4s2 3d10 4p5
2, 8, 18, 7
Electron shells of bromine (2, 8, 18, 7)
History
Discovery Antoine Jérôme Balard and Leopold Gmelin (1825)
First isolation Antoine Jérôme Balard and Leopold Gmelin (1825)
Physical properties
Phase likido
Density (near r.t.) (Br2, liquid) 3.1028 g·cm−3
Melting point 265.8 K, -7.2 °C, 19 °F
Boiling point 332.0 K, 58.8 °C, 137.8 °F
Critical point 588 K, 10.34 MPa
Heat of fusion (Br2) 10.571 kJ·mol−1
Heat of vaporization (Br2) 29.96 kJ·mol−1
Molar heat capacity (Br2)
75.69 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 185 201 220 244 276 332
Atomic properties
Oxidation states 7, 5, 4, 3, 1, -1
(strongly acidic oxide)
Electronegativity 2.96 (Pauling scale)
Ionization energies 1st: 1139.9 kJ·mol−1
2nd: 2103 kJ·mol−1
3rd: 3470 kJ·mol−1
Atomic radius 120 pm
Covalent radius 120±3 pm
Van der Waals radius 185 pm
Miscellanea
Crystal structure orthorhombic
Bromine has a orthorhombic crystal structure
Magnetic ordering diamagnetic[1]
Electrical resistivity (20 °C) 7.8×1010Ω·m
Thermal conductivity 0.122 W·m−1·K−1
Speed of sound (20°C) 206 m·s−1
CAS registry number 7726-95-6
Most stable isotopes
Main article: Isotopes of bromine
iso NA half-life DM DE (MeV) DP
79Br 50.69% 79Br is stable with 44 neutrons
81Br 49.31% 81Br is stable with 46 neutrons
t  h  u
· r

Ang bromo (Iningles bromine) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Br ug kaiphan nga atomik 35. Ang bromo mao ang halogen.

Ang mga gi basihan niini[usba | edit source]

  1. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.


Galeriya sa hulagway[usba | edit source]