• Latin name:
  Arsenicum
• English name:
  Arsenic
• Year discovered:
  815 AD
• Discovered by:
  Albertus Magnus
• Country of Discovery:
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• Cost per 100 grams:
  43 USD
• CAS Number:
  CAS7440-38-2
• Electron shell:
  K2-L8-M18-N5-O0-P0-Q0-R0

Arsenic is a chemical element with symbol As and atomic number 33. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. Arsenic is a metalloid.

• Atomic number:
  33
• Atomic weight (Relative atomic mass):
  74.921594565322 (g/mol)
• Density:
  5.727 (g/cm³)
• Melting point:
  817.0°C = 1502.60°F = 1090.15K
• Boiling point:
  614.0°C = 1137.20°F = 887.15K
• Valence electrons:
  2, 3, 5
• Period:
  4
• Group:
  VA
• Block:
  p - 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:
  [Ar] 3d10 4s2 4p3 = 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3
Oxidation states:

• 0
• -
• -
• -3
• -
• -
• +1
• +2
• +3
• +4
• +5
• -
• -
• -
• -
• Ion charge:
  As^3-
• The ionization potential of an atom:
  9.815 (eV)
• Atomic radius:
  114 (pm)
• Covalent radius:
  120 (pm)
• Van der Waals radius:
  185 (pm)

• Electrical conductivity:
  3003003.003003 (S/m)
• Electrical type:
  Conductor
• Magnetic type:
  Paramagnetism
• Volume magnetic susceptibility:
  -2.23 ⋅ 10^-5
• Mass magnetic susceptibility:
  -3.9 ⋅ 10^-9
• Molar magnetic susceptibility:
  -2.92 ⋅ 10^-10 (m³/mol)
• Resistivity:
  3.33 ⋅ 10^-7 (Ω · m)
• Superconducting point:
  ----

• Debye temperature:
  11.85°C = 53.33°F = 285K

• Colour:
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• CAS Number:
  CAS7440-38-2
• 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:
  2.18
• Valence electrons:
  2, 3, 5
• Electron affinity:
  77.65 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 "Arsenic" at the rate of
  8 ⋅ 10^-7%
• Sun contains "Arsenic" at the rate of
  ----
• Oceans contain "Arsenic" at the rate of
  5 ⋅ 10^-5%
• Human body contains "Arsenic" at the rate of
  9.98774237 ⋅ 10^-6%
• The Earth's crust consists of "Arsenic" at the rate of
  1.8 ⋅ 10^-4%
• Meteorites consist of "Arsenic" at the rate of
  1.8 ⋅ 10^-4%