Mendelevium

Mendelevium, the ninth transuranium element of the actinide series to be discovered, was first identified by Ghiorso, Harvey, Choppin, Thompson, and Seaborg in 1955 as a product of the bombardment of the einsteinium isotope ²⁵³Es with helium ions. The isotope produced was ²⁵⁶Md [2].

Named after Dimitri Mendeleev [2]. Originally the symbol was Mv [3]. The name and symbol was finally decided in 1997 [4].