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Astronomy Chemical element

Meitnerio

Meitnerio (Mt) is a synthetic chemical element belonging to the category Transition metal, with atomic number 109 and atomic mass 276.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

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Astronomy · Chemical element

Meitnerium

EL31

Identity

  • Name: Meitnerio
  • Symbol: Mt
  • Atomic number: 109
  • Atomic mass: 276.0000 u

Position in the periodic table

  • Group: 9
  • Period: 7
  • Category: Transition metal

Physico-chemical properties

  • Standard state: Solid (predicted)
  • Melting point: Unknown (predicted to be very high)
  • Density: Very high (predicted)
  • Electron configuration: [Rn] 5f¹⁴ 6d⁷ 7s²

Scientific description

Meitnerio is a synthetic chemical element with symbol Mt and atomic number 109. It belongs to the category of Transition metal and occupies group 9 and period 7. Its standard atomic mass is taken here as 276.0000 u, corresponding to a representative isotope.