why is 2019 year declared has international year of periodic table by unesco
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2019 - International Year of the Periodic Table of Chemical Elements. ... 1869 is considered as the year of discovery of the Periodic System by the Russian scientist, Dmitri Mendeleev. The IYPT 2019 also commemorates the 150th anniversary of the establishment of the Periodic Table of Chemical Elements
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2019 - International Year of the Periodic Table of Chemical Elements. ... 1869 is considered as the year of discovery of the Periodic System by the Russian scientist, Dmitri Mendeleev. The IYPT 2019 also commemorates the 150th anniversary of the establishment of the Periodic Table of Chemical Elements
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