Which year was designated by UNESCO as the International Year of the Periodic Table (IYPT) to mark the 150th anniversary of the Mendeleev Periodic Table?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 2019.
In 2019, UNESCO and the United Nations marked the 150th anniversary of Dmitri Mendeleev’s periodic table by designating the year as the International Year of the Periodic Table of Chemical Elements (IYPT). Formally recognized by a resolution of the UN General Assembly in December 2017, this initiative was celebrated throughout 2019 with worldwide events—symposia, educational outreach, public lectures—to highlight the periodic table’s significance in chemistry, physics, biology, and sustainable development.
The thematic year served to inspire interest in basic sciences, celebrate scientific achievements, and emphasize how the periodic table continues to influence critical fields like medicine, energy, and material science . UNESCO and partner organizations like IUPAC (International Union of Pure and Applied Chemistry) coordinated various global programs, educational resources, and exhibitions, reaffirming the periodic table’s status as one of humanity’s most powerful scientific tools.
Therefore, the year 2019 was aptly chosen to commemorate the sesquicentennial of this iconic scientific framework.