I WONDER - When Was The Periodic Table Created?

The video discusses the creation of the periodic table by Dmitri Mendeleev in 1869. Mendeleev organized elements by atomic weight and left spaces for elements not yet discovered. His table allowed him to predict the properties of elements before their discovery.

What was the significance of the gaps left in Mendeleev's periodic table?

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What was one of Mendeleev's significant achievements using the periodic table?

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