Meitnerium
Meitnerium is a chemical element in the periodic table that has the symbol Mt and atomic number 109. It is a synthetic element whose most stable known isotope is Mt-270 with a half-life of 1.1 seconds.
| General | |
|---|---|
| Name, Symbol, Number | meitnerium, Mt, 109 |
| Chemical series | transition metals |
| Group, Period, Block | 9, 7, d |
| Appearance | unknown, probably silvery white or metallic gray |
| Standard atomic weight | [270] g·mol-1 |
| Electrons per shell | 2, 8, 18, 32, 32, 15, 2 |
| Phase | presumably a solid |
| CAS registry number | 54038-01-6 |
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