Question

.4. The International Year of Periodic Table has been designated by -----------in ----------year marking the ----------anniversary of the Mendeleev periodic table. *

2 points

UNESCO, in 2019, 140 Anniversary

UNESCO, in 2019, 150 Anniversary

Russia , in 2016, 140 Anniversary

Russia, in 2018, 150 Anniversary

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Answer 1

Answer:

IYPT 2019. 2019 has been designated by UNESCO as the International Year of the Periodic Table (IYPT), marking the 150th anniversary of the Mendeleev periodic table, which is an iconic image and a vital tool to all who learn and work in science, at all stages of their learning and careers.