Beryllium Elemental Symbol
Beryllium



French German Italian Portuguese Spanish Swedish
Béryllium Beryllium Berillio Berílio Berílio Beryllium

Beryllium(Be) atomic and molecular weight, atomic number and elemental symbol Beryllium is a Block S, Group 2, Period 2 element. The number of electrons in each of Beryllium's shells is 2, 2 and its electron configuration is [He] 2s2. The beryllium atom has a radius of 112.pm and it's Van der Waals radius is 153.pm. In its elemental form, CAS 7440-41-7, beryllium has a white-gray metallic appearance. Elemental BerylliumBeryllium Bohr ModelBeryllium is found in bertrandite (Be4Si2O7(OH)2), beryl (Al2Be3Si6O18), chrysoberyl (Al2BeO4) and phenakite (Be2SiO4). The most common source for commercial production of Beryllium is Beryl. Beryllium was discovered by Louis Nicolas Vauquelin in 1797. It was first isolated by Friedrich Wöhler & Antoine Bussy in 1828. The origin of the name Beryllium comes from the Greek word 'beryllos' meaning beryl.

Beryllium is a fairly soft metal that is brittle yet strong. It is used as a coating on X-ray tubes because it is transparent to the X-ray range. It also has military and nuclear industry applications. High Purity (99.999%) Beryllium (Be) Sputtering TargetBeryllium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity). High Purity (99.999%) Beryllium Oxide (BeO) PowderElemental or metallic forms include pellets, rod, wire and granules for evaporation source material purposes. Beryllium nanoparticles and nanopowders provide ultra-high surface area which nanotechnology research and recent experiments demonstrate function to create new and unique properties and benefits. Oxides are available in powder and dense pellet form for such uses as optical coating and thin film applications. Oxides tend to be insoluble. Fluorides are another insoluble form for uses in which oxygen is undesirable such as metallurgy, chemical and physical vapor deposition and in some optical coatings. Beryllium is also available in soluble forms including chlorides, nitrates and acetates. These compounds can be manufactured as solutions at specified stoichiometries.

Beryllium and its salts are toxic as well as carcinogenic. Safety data for Beryllium and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the Products tab below.


  • Properties
  • Safety Data
  • Products
  • Research
  • Isotopes
  • Other Elements

Beryllium Properties


GENERAL PROPERTIES   PHYSICAL PROPERTIES  
Symbol: Be Melting Point: 1287 oC, 2348.6 oF, 1560.15 K
Atomic Number: 4 Boiling Point: 2468 oC, 4474.4 oF, 2741.15 K
Atomic Weight: 9.012 Density: 1.848 gm/cc
Element Category: alkaline earth metal Liquid Density @ Melting Point: 1.690 g·cm−3
Group, Period, Block: 2, 2, s Specific Heat: 0.436 Cal/g/K @ 25 °C
    Heat of Vaporization 308.8 kJ mol-1
CHEMICAL STRUCTURE Heat of Fusion 9.8 kJ mol-1
Electrons: 4 Thermal Conductivity: 2.01 W/cm/K @ 298.2 K
Protons: 4 Thermal Expansion: (25 °C) 11.3 µm·m−1·K−1
Neutrons: 5 Electrical Resistivity: 4.0 microhm-cm @ 20°C
Electron Configuration: [He]2s2 Electronegativity: 1.5 Paulings
Atomic Radius: 112 pm Tensile Strength: N/A
Covalent Radius: 96±3 pm Molar Heat Capacity: 16.443 J·mol−1·K−1
Van der Waals radius: 153 pm Young's Modulus: 287 GPa
Oxidation States: 2, 1 (amphoteric oxide) Shear Modulus: 132 GPa
Phase: Solid Bulk Modulus: 130 GPa
Crystal Structure: hexagonal close-packed Poisson Ratio: 0.032
Magnetic Ordering: diamagnetic Mohs Hardness: 5.5
1st Ionization Energy: 899.51 kJ mol-1 Vickers Hardness: 1670 MPa
2nd Ionization Energy: 1757.12 kJ mol-1 Brinell Hardness: 600 MPa
3rd Ionization Energy: 14848.87 kJ mol-1 Speed of Sound: (r.t.) 12870 m·s−1
       
IDENTIFIERS   MISCELLANEOUS  
CAS Number: 7440-41-7 Abundance in typical human body, by weight: 0.4 ppb
ChemSpider ID: 4573986 Abundance in typical human body, by atom: 0.3 ppb
PubChem CID: 5460467 Abundance in universe, by weight: 1 ppb
MDL Number: MFCD00134032 Abundance in universe, by atom: 0.1 ppb
EC Number: 231-150-7 Discovered By: Louis Nicolas Vauquelin
Beilstein Number: N/A Discovery Date: 1797
SMILES Identifier: [BeH2]  
InChI Identifier: InChI=1S/Be Other Names: Berílio
InChI Key: ATBAMAFKBVZNFJ-UHFFFAOYSA-N  
       
       
       
       
       

Health, Safety & Transportation Information for Beryllium


Material Safety Data Sheet MSDS
Signal Word Danger
Hazard Statements H301-H315-H317-H319-H330-H335-H350i-H372
Hazard Codes T+
Risk Codes 49-25-26-36/37/38-43-48/23
Safety Precautions 53-45
RTECS Number DS1750000
Transport Information UN 1567 6.1/PG 2
WGK Germany 3
Globally Harmonized System of
Classification and Labelling (GHS)
Skull and Crossbones-Acute Toxicity  Health Hazard  

Beryllium Products

Metal Forms  •  Compounds  •  Alloys  •  Oxide Forms  •  Organometallic Compounds
Sputtering Targets  •  Nanomaterials  •  Semiconductor Materials



Recent Research & Development for Beryllium

  • Shweta Dabhi, Venu Mankad, Prafulla K. Jha, A first principles study of phase stability, bonding, electronic and lattice dynamical properties of beryllium chalcogenides at high pressure, Journal of Alloys and Compounds, Volume 617, 25 December 2014
  • R.P. Doerner, M.J. Baldwin, D. Nishijima, Plasma-induced morphology of beryllium targets exposed in PISCES-B, Journal of Nuclear Materials, Volume 455, Issues 1–3, December 2014
  • Jae-Hwan Kim, Masaru Nakamichi, Reactivity of plasma-sintered beryllium–titanium intermetallic compounds with water vapor, Journal of Nuclear Materials, Volume 455, Issues 1–3, December 2014
  • M. Klimenkov, V. Chakin, A. Moeslang, R. Rolli, TEM study of impurity segregations in beryllium pebbles, Journal of Nuclear Materials, Volume 455, Issues 1–3, December 2014
  • Jae-Hwan Kim, Masaru Nakamichi, Effect of grain size on the hardness and reactivity of plasma-sintered beryllium, Journal of Nuclear Materials, Volume 453, Issues 1–3, October 2014
  • J. Roth, W.R. Wampler, M. Oberkofler, S. van Deusen, S. Elgeti, Deuterium retention and out-gassing from beryllium oxide on beryllium, Journal of Nuclear Materials, Volume 453, Issues 1–3, October 2014
  • R. García-Gutiérrez, M. Barboza-Flores, D. Berman-Mendoza, O.E. Contreras-López, A. Ramos-Carrazco, Synthesis and characterization of highly luminescent beryllium nitride, Materials Letters, Volume 132, 1 October 2014
  • K. Hacini, Z. Chouahda, A. Djedid, H. Meradji, S. Ghemid, F. El Haj Hassan, R. Khenata, Ab initio study of the structural, electronic, phase diagram, and thermal properties of cadium beryllium selenide mixed crystals, Materials Science in Semiconductor Processing, Volume 26, October 2014
  • M.I. Airila, A. Järvinen, M. Groth, P. Belo, S. Wiesen, S. Brezinsek, K. Lawson, D. Borodin, A. Kirschner, J.P. Coad, K. Heinola, J. Likonen, M. Rubel, A. Widdowson, JET-EFDA Contributors, Preliminary Monte Carlo simulation of beryllium migration during JET ITER-like wall divertor operation, Journal of Nuclear Materials, Available online 16 September 2014
  • R.P. Doerner, I. Jepu, D. Nishijima, E. Safi, L. Bukonte, A. Lasa, K. Nordlund, T. Schwarz-Selinger, The relationship between gross and net erosion of beryllium at elevated temperature, Journal of Nuclear Materials, Available online 16 September 2014

Beryllium Isotopes


Beryllium has one stable isotope: 9Be.

Nuclide Symbol Isotopic Mass Half-Life Nuclear Spin
9Be 10.0135338 Stable 0+