Atomic symbol: Be
Atomic number: 4.
Atomic weight: 9.01218.
Stable isotope: 9Be (9.0121822 amu): 100 %; Relevant radioisotopes: 10Be (t1/2 ≈ 1.38 Ma), 7Be (t1/2 ≈ 53.28 days)
1 Atm melting point: 1287 °C
1 Atm boiling point: 2471 °C
Valence: + 2.
Ionic radius: 0.41 Å (tetrahedral); 0.59 Å (octahedral)
Pauling electronegativity: 1.57
First ionization potential: 9.322
CI chondritic abundance: 0.025 ppm
Continental crust: 1.9 ppm
Silicate Earth: 0.07 ppm
Seawater: 0.0018 pg/g
Core abundance: ~ 0
(Earthref.org, 2016; McDonough, 2004; Palme et al., 2014)
Properties
Beryllium, the lowest atomic number alkaline earth element, is a steel-gray, brittle, lightweight metal. It is most commonly encountered in a small number of silicate and oxide minerals and occurs as a low abundance, lithophile trace element in most geologic systems.
History and Use
Beryllium was discovered by Louis-Nicolas Vauquelin in 1798 in the oxide form via extraction from emerald and beryl. In 1828,...
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References
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Ryan, J.G. (2016). Beryllium. In: White, W. (eds) Encyclopedia of Geochemistry. Encyclopedia of Earth Sciences Series. Springer, Cham. https://doi.org/10.1007/978-3-319-39193-9_80-1
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