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holmium
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holmium

Silvery, metallic element of the lanthanide series, atomic number 67, relative atomic mass 164.93. It occurs in combination with other rare-earth metals and in various minerals such as gadolinite. Its compounds are highly magnetic.

The element was discovered in 1878, spectroscopically, by the Swiss chemists Jacques-Louis Soret and Marc Delafontaine, and independently in 1879 by Swedish chemist Per Cleve (1840-1905), who named it after Stockholm, near which it was found.



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