// todo need optimize like in event.jsp. Add indexing or not indexing this page. Lanthanides & Actinides (1 ene 1945 año – 8 mayo 1945 año) (Cinta de tiempo)
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Lanthanides & Actinides (1 ene 1945 año – 8 mayo 1945 año)

Descripción:

In 1945 Glenn Seaborg identified lanthanides and actinides (atomic number >92), which are usually placed below the periodic table.

Añadido al timeline:

History of the Periodic Table

ByGeorge Rodriguez
25 sep 2018

fecha:

1 ene 1945 año
8 mayo 1945 año
~ 4 months and 7 days
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