Meitnerium

Meitnerium is named after Lise Meitner, the Austrian-Swedish physicist who co-discovered nuclear fission — the process that powers nuclear reactors and atomic bombs. Despite her crucial role, Meitner was unjustly overlooked for the Nobel Prize, which went only to her collaborator Otto Hahn. Naming element 109 after her in 1997 was a long-overdue recognition. The element was first synthesized in 1982 at the GSI laboratory in Germany.

Meitnerium was created by bombarding bismuth with iron atoms. Only a single atom was produced in the first experiment. Its most stable isotope has a half-life of about 7.6 seconds. No chemical properties of meitnerium have been experimentally confirmed because so few atoms have been produced. Based on its position in the periodic table, it is predicted to behave similarly to iridium.

Meitnerium's symbol 'Mt' is a distinctive two-letter element in Spellement. While 'mt' is rare at the start of English words, partial emphasis allows using 'm' or 't' individually — both among the most frequent consonants in English, making meitnerium a flexible word-building element.