The eighteenth of the synthetic transuranium elements, symbol Ds, atomic number 110. Darm-stadtium should be a heavy homolog of the elements platinum, palladium, and nickel. It is the eighth element in the 6d shell. The various isotopes of darmstadtium have been reliably documented by the observation of at least four isotopes with half-lives in the range of milliseconds, a time too short for the application of chemical methods, verifying its position in the periodic system.