
Darmstadtium, is a synthetic element that is not present in the environment at all. Chemically, darmstadtium is in the same Group as nickel, palladium, and platinum (Group 10). Unlike these lighter atoms, darmstadtium decays after a small fraction of a thousandth of a second into lighter elements by emitting α-particles which are the nuclei of helium atoms. Darmstadt is the latest city to get an element named after itself. Not many more are in the running, since you need to build huge nuclear accelerators, and elements get harder to make the higher you go.