Transition metal

Meitnerium

Meitnerium (Mt) has atomic number 109. PubChem classifies it as transition metal.

Atomic number

109

Symbol

Mt

Atomic weight (source value)

277.154

Electron configuration

[Rn]7s2 5f14 6d7 (calculated)

Standard state

Solid

Electronegativity (Pauling)

Not provided

Melting point (K)

Not provided

Boiling point (K)

Not provided

Density (g/cm³)

Not provided

Oxidation states

9, 8, 6, 4, 3, 1

Understanding this entry

Atomic number is the number of protons in the nucleus. Properties are reference values and may depend on conditions and measurement conventions. An atomic weight is not the mass of every isotope. For elements without a standard atomic weight, a source may report an isotope mass number. Blank source values are shown as unavailable rather than estimated.

Further reading and reference: NIH PubChem source dataset ↗. Values and educational summaries are not a substitute for specialised advice.