• Latin name:
  Strontium
• English name:
  Strontium
• Year discovered:
  1787
• Discovered by:
  Adair Crawford
• Country of Discovery:
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• Cost per 100 grams:
  19.6 USD
• CAS Number:
  CAS7440-24-6
• Electron shell:
  K2-L8-M18-N8-O2-P0-Q0-R0

Strontium is a chemical element with symbol Sr and atomic number 38. An alkaline earth metal, strontium is a soft silver-white or yellowish metallic element that is highly reactive chemically. The metal turns yellow when it is exposed to air.

• Atomic number:
  38
• Atomic weight (Relative atomic mass):
  87.6166442781531 (g/mol)
• Density:
  2.63 (g/cm³)
• Melting point:
  777.0°C = 1430.60°F = 1050.15K
• Boiling point:
  1382.0°C = 2519.60°F = 1655.15K
• Valence electrons:
  2
• Period:
  5
• 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:
  [Kr] 5s2 = 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2
Oxidation states:

• -
• -
• -
• -
• -
• -
• -
• +2
• -
• -
• -
• -
• -
• -
• -
• Ion charge:
  Sr²⁺
• The ionization potential of an atom:
  5.695 (eV)
• Atomic radius:
  219 (pm)
• Covalent radius:
  190 (pm)
• Van der Waals radius:
  249 (pm)

• Electrical conductivity:
  7575757.57575758 (S/m)
• Electrical type:
  Conductor
• Magnetic type:
  Paramagnetism
• Volume magnetic susceptibility:
  -3.47 ⋅ 10^-6
• Mass magnetic susceptibility:
  1.32 ⋅ 10^-9
• Molar magnetic susceptibility:
  1.16 ⋅ 10^-10 (m³/mol)
• Resistivity:
  1.32 ⋅ 10^-7 (Ω · m)
• Superconducting point:
  ----

• Debye temperature:
  -126.15°C = -195.07°F = 147K

• Colour:
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• CAS Number:
  CAS7440-24-6
• 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:
  0.95
• Valence electrons:
  2
• Electron affinity:
  5.023 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 "Strontium" at the rate of
  4 ⋅ 10^-6%
• Sun contains "Strontium" at the rate of
  5 ⋅ 10^-4%
• Oceans contain "Strontium" at the rate of
  8.0 ⋅ 10^-4%
• Human body contains "Strontium" at the rate of
  0.00045658250833%
• The Earth's crust consists of "Strontium" at the rate of
  0.037%
• Meteorites consist of "Strontium" at the rate of
  8.6 ⋅ 10^-4%