International Year of the Periodic Table of Chemical Elements
Description
International Year of the Periodic Table of Chemical Elements was not observed recently. It was observed the year 2019 in 2019.
Occurrence Patterns
| Observed | First Year | Last Year |
|---|---|---|
| the year 2019 | 2019 | 2019 |
Countdown
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Founders
United Nations General Assembly on December 20th, 2017
Hashtags
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Sources
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