Darmstadtium

Darmstadtium is a synthetic, highly radioactive element, first produced in 1994 by fusing nickel ions with a lead target. Only a few atoms have ever been made, and the known isotopes decay within seconds. Its physical and chemical properties have not been measured directly; calculations suggest it may resemble platinum, but this remains unconfirmed. Darmstadtium has no practical uses and is produced only for scientific research.