That’s why the United Nations and the International Union of Pure and Applied Chemistry are celebrating the 150th anniversary of Mendeleev’s periodic table. Why has the periodic table endured for 150 years? The third reason is that he was very insistent during his lifetime that he deserved credit for the periodic table. They propose a unified way of organizing the atomic weights, and when they do that, they correct a whole bunch of atomic weights. Kosuke Morita of the Riken Nishina Center for Accelerator-Based Science in Japan points to element 113 on the periodic table.

Source: Los Angeles Times January 31, 2019 21:55 UTC