Samarium

1879

Samarium

The book of science

Tom Sharp


ParisPaul-Émile Lecoq de Boisbaudran elements

Samarium

Atomic number 62

Doable stuff


It’s only a coincidence that Lecoq discovered both gallium and samarium, and that the atomic number of samarium is exactly twice the atomic number of gallium.

The history of the discovery of samarium shows us that this stuff isn’t easy. Rare earths are placed in the same locations in the periodic table because they are chemically very similar.

See also in The book of science:

Readings on wikipedia:

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