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Astronomy Chemical element

Plutonium

Plutonium (Pu) is a chemical element belonging to the actinide series (inner transition metals), with atomic number 94 and atomic mass 244.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

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Astronomy · Chemical element

Plutonium

EL2M

Identity

  • Name: Plutonium
  • Symbol: Pu
  • Atomic number: 94
  • Atomic mass: 244.0000 u

Position in the periodic table

  • Group: - (actinide series)
  • Period: 7
  • Category: Actinide (inner transition metal)

Physico-chemical properties

  • Standard state: Solid
  • Melting point: About 640°C
  • Density: About 19.8 g/cm³
  • Electron configuration: [Rn] 5f⁶ 7s²

Scientific description

Plutonium is a chemical element with symbol Pu and atomic number 94. It belongs to the actinide series of the inner transition metals and is located in period 7 of the f-block in the periodic table. Its standard atomic mass is 244.0000 u.