150 years of Chemistry’s Periodic Table

The periodic table of chemical elements is having its 150th birthday, and the UN scientific agency is holding a year of events to celebrate.

Key Facts

  • Russian scientist Dmitry Mendeleev published the first such table in 1869.
  • The UN Education, Scientific and Cultural Organization kicked off the “International Year of the Period Table of Chemical Elements” on 29th January, 2019.
  • Other activities UNESCO is organising this year include an online competition to test high school students’ knowledge of the table, and scientific experiments brought to schools around the ....

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