Living Reference Work Entry

Encyclopedia of Geochemistry

Part of the series Encyclopedia of Earth Sciences Series pp 1-5

Date: Latest Version

Bromine

  • Hélène BureauAffiliated withInstitut de Minéralogie, de Physique desMatériaux et de Cosmochimie (IMPMC), Sorbonne Universités – UPMCUniv. Paris 06, CNRSUMR 7590, MuséumNational d’Histoire Naturelle Email author 

Element Data

Atomic Symbol: Br

Atomic Number: 35

Atomic Weight: 79.901–79.907

Stable isotopes: 79Br : 50.5–50.8 %

81Br : 49.2–49.5 %

1 Atm Melting Point: 266 K

1 Atm Boiling Point: 332.7 K

1 Atm of Nebular Condensationa: 546 K

Valence State: 4s2p5

Common Valences: −1, 0, +1, +3, +5

Common Ions: Br, BrO, BrO3, BrO4

Ionic Radiusa: 196 pm

Pauling Electronegativity: 2.96

First Ionization Potential: 1139.9 kJ/mol

Chondritic (CI) Abundance b: 3.26 ppm

Silicate Earth Abundance cb: 50–75 ppb

Crustal Abundanced: 0.88 ppm

Oceanic cruste: 0.17 ppm

Depleted Mantlee: 0.02 ppm

Seawater Abundancef: ~ 67 ppm

Evaporitesg: 151 ppm

Sediments + pore waterh: 97 ppm

Tropospherei: 0.016 ppbv

Core Abundancej: ~0.7 ppm

from: aJ. Meija et al. (2016) bJambon et al., 1995; cMcDonough and Sun; dRudnick and Gao, 2003; eSchilling et al., 1980; fBruland and Lohan, 2003; gHay et al., 2006; hKnaugh (1998);iWarneck, 2000; jMcDonough, 2005.

Properties

Bromine is the third halogen element located in the group XVII of the periodic table with an ...

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