Penemuan unsur kimia: Perbedaan antara revisi

|[[Eugene Demarcay]]

|-

|[[1907]]

|[[Georges Urbain]]

|[[Dirk Coster]] and [[Georg von Hevesy|György Hevesy]]

|-

|[[1925]]

|[[Walter Noddack]] and [[Ida Tacke]]

|-

|[[1937]]

|[[Carlo Perrier]] and [[Emilio Segrè]]

|First [[synthetic element]] discovered. [[Mendeleev's predicted elements|Predicted]] by [[Mendeleev]] in 1871 as ekamanganese.

|-

|[[1939]]

|[[Marguerite Derey]]

|Last naturally occurring element discovered; all elements discovered after it are synthetic.

|-

|[[1940]]

|[[Dale R. Corson]], [[K.R.Mackenzie]], [[Emilio Segrè]]