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Astronomy Chemical element

Strontium

Strontium (Sr) is a chemical element belonging to the category Alkaline earth metal, with atomic number 38 and atomic mass 87.6200 u.

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Above, what contains it; below, what it contains; on the right, what links it to another layer.

Astronomy · Chemical element

Strontium

EL12

Identity

  • Name: Strontium
  • Symbol: Sr
  • Atomic number: 38
  • Atomic mass: 87.6200 u

Position in the periodic table

  • Group: 2
  • Period: 5
  • Category: Alkaline earth metal

Physico-chemical properties

  • Standard state: Solid
  • Melting point: 777°C
  • Boiling point: 1377°C
  • Density: 2.64 g/cm³
  • Electron configuration: [Kr] 5s²

Scientific description

Strontium is a chemical element with symbol Sr and atomic number 38. It belongs to the category of Alkaline earth metal and occupies group 2 and period 5.