// todo need optimize like in event.jsp. Add indexing or not indexing this page. Lanthanides & Actinides (jan 1, 1945 – may 8, 1945) (Timeline)
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Lanthanides & Actinides (jan 1, 1945 – may 8, 1945)

Description:

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

Added to timeline:

History of the Periodic Table

ByGeorge Rodriguez
25 Sep 2018

Date:

jan 1, 1945
may 8, 1945
~ 4 months and 7 days
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