meitnerium

Atomic number: 109
Atomic weight: 266
Symbol: Mt
Group number: 9
Electronic configuration: [Rn].5f¹⁴.6d⁷.7s² (a guess based upon that of iridium)

Physical data

Standard state: unknown but presumably a solid at 298 K
Colour: no data
Density of solid at ambient temperature/kg m-3: no data
Molar volume/cm3: no data

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