Meitnerium is a synthetic element (meaning it does not occur in nature). It was first made by scientists in West Germany in 1982. It is made by colliding iron and bismuth atoms together. The most stable isotope of meitnerium has a half-life of 8 seconds. Lise Meitner (after whom Meitnerium is named), her long-time research partner Otto Hahn, and her nephew Otto Frisch, discovered and explained nuclear fission for the first time in 1938/1939. Meitner and Frisch were not credited when Hahn won the Nobel Prize for Chemistry in 1944.
More info about the International Year of the Periodic Table (IYPT) in crystals project:
This project (#IYPTCrystals) is part of the International Year of the Periodic Table celebration (#IYPT2019), read more about the project here. You can also follow the project on Twitter @IYPTCrystals or Instagram IYPTCrystals.
If you want to find out more about some of the terms and concepts we have a Frequently Asked Questions Page Frequently Asked Questions Page.