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Astronomy Chemical element

Uranio

Uranio (U) is a chemical element belonging to the category Inner transition metal (actinide series), with atomic number 92 and atomic mass 238.0290 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

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Astronomy · Chemical element

Uranium

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Identity

  • Name: Uranium
  • Symbol: U
  • Atomic number: 92
  • Atomic mass: 238.0290 u

Position in the periodic table

  • Group: 3
  • Period: 7
  • Category: Inner transition metal (actinide series)

Physico-chemical properties

  • Standard state: Solid
  • Melting point: About 1132 °C
  • Density: About 19.1 g/cm³
  • Electron configuration: [Rn] 5f³ 6d¹ 7s²

Scientific description

Uranium is a chemical element with symbol U and atomic number 92. It belongs to the category of inner transition metals, specifically the actinide series, and occupies group 3 and period 7 in the periodic table. Its standard atomic mass is 238.0290 u, it is a dense, silvery metal and is naturally radioactive.