• Latin name:
  Beryllium
• English name:
  Beryllium
• Year discovered:
  1798
• Discovered by:
  Louis-Nicolas Vauquelin
• Country of Discovery:
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• Cost per 100 grams:
  1300 USD
• CAS Number:
  CAS7440-41-7
• Electron shell:
  K2-L2-M0-N0-O0-P0-Q0-R0

Beryllium is a chemical element with symbol Be and atomic number 4. It is created through stellar nucleosynthesis and is a relatively rare element in the universe. It is a divalent element which occurs naturally only in combination with other elements in minerals.

• Atomic number:
  4
• Atomic weight (Relative atomic mass):
  9.01218306156802 (g/mol)
• Density:
  1.85 (g/cm³)
• Melting point:
  1287.0°C = 2348.60°F = 1560.15K
• Boiling point:
  2469.0°C = 4476.20°F = 2742.15K
• Valence electrons:
  2
• Period:
  2
• Group:
  IIA
• Block:
  s - block
• Emission spectrum:
  

• Phase:
  Solid

  
• Fusion heat:
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• Specific heat:
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• Thermal expansion:
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• Vaporization heat:
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• Electron configuration:
  1s2 2s2
Oxidation states:

• -
• -
• -
• -
• -
• -
• -
• +2
• -
• -
• -
• -
• -
• -
• -
• Ion charge:
  Be²⁺
• The ionization potential of an atom:
  9.323 (eV)
• Atomic radius:
  112 (pm)
• Covalent radius:
  99 (pm)
• Van der Waals radius:
  153 (pm)

• Electrical conductivity:
  28089887.6404494 (S/m)
• Electrical type:
  Conductor
• Magnetic type:
  Diamagnetism
• Volume magnetic susceptibility:
  -2.328 ⋅ 10^-5
• Mass magnetic susceptibility:
  -1.26 ⋅ 10^-8
• Molar magnetic susceptibility:
  -1.136 ⋅ 10^-10 (m³/mol)
• Resistivity:
  3.56 ⋅ 10^-8 (Ω · m)
• Superconducting point:
  -273.12°C = -459.62°F = 0.026K

• Debye temperature:
  726.85°C = 1340.33°F = 1000K

• Colour:
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• CAS Number:
  CAS7440-41-7
• CID Number:
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• RTEC Number:
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• Brinell hardness:
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• Mohs hardness:
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• Vickers hardness:
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• Bulk modulus:
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• Young's modulus:
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• Liquid density:
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• Molar volume:
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• Poisson's ratio:
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• Shear modulus:
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• Speed of sound transmission:
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• Refractive index:
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• Thermal conductivity:
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• Electronegativity:
  1.57
• Valence electrons:
  2
• Electron affinity:
  -48.0 kJ/mole

• Radioactive:
  No
• Half life:
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• Lifetime:
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• Neutron cross section, barn:
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• Universe contains "Beryllium" at the rate of
  1 ⋅ 10^-7%
• Sun contains "Beryllium" at the rate of
  1 ⋅ 10^-6%
• Oceans contain "Beryllium" at the rate of
  6 ⋅ 10^-9%
• Human body contains "Beryllium" at the rate of
  5.136553 ⋅ 10^-8%
• The Earth's crust consists of "Beryllium" at the rate of
  2.8 ⋅ 10^-4%
• Meteorites consist of "Beryllium" at the rate of
  2.9 ⋅ 10^-5%