Johan Gadolin (5 June 1760 – 15 August 1852) was a Finnish chemist, physicist and mineralogist. Gadolin discovered the chemical element yttrium. He was also the founder of Finnish chemistry research, as the second holder of the Chair of Chemistry, established in 1761 and first held by Pehr Adrian Gadd (4 April 1727 – 11 August 1797).

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