Meitnerium- Mt
Chemical properties of meitnerium
| Atomic number | 109 |
|---|---|
| Representative mass number | 277 (Mt-277; radioactive) |
| Periodic-table group | Group 9 |
| Electron configuration | [Rn] 5f14 6d7 7s2 |
| Density | Unknown |
| Melting point | Unknown |
| Boiling point | Unknown |
| Representative isotope half-life | seconds; the mass-number and half-life assignments remain uncertain |
Meitnerium (Mt) is a synthetic, radioactive element with atomic number 109. The bracketed representative mass number is the mass number of a radioactive isotope, not a standard atomic weight. Its isotopes decay rapidly, and available measurements are limited to very small numbers of atoms; bulk physical properties such as density, melting point, and boiling point are unknown.
Research and occurrence
Meitnerium is a synthetic, highly radioactive element. Fewer than ten atoms have been reported, and no macroscopic sample exists. Its properties are therefore largely unknown or predicted. Research is its only context; it has no known commercial or water-treatment use.
Health and environmental context
Meitnerium does not occur naturally in measurable quantities and is not an environmental contaminant encountered in ordinary water or process-water treatment. It is handled only in specialised, controlled research settings.
Back to the periodic table of elements.
Sources and further reading
Meitnerium page last reviewed: by Lenntech.