Jaime Aguirre

Mendeleev's periodic table

Discussion created by Jaime Aguirre on Jun 7, 2019

This is a two-part question regarding Mendeleev’s periodic table of 1869:

 

If fluorine was discovered in 1886, why is it shown in Mendeleev’s periodic table of 1869?

If terbium was discovered in 1843, why is it not shown in Mendeleev’s periodic table of 1869?

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