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Mendeleev used the elements above his empty gaps to calculate and predict the exact physical and chemical properties of the missing elements: →right arrow Discovered 4 years later as Gallium "Eka-boron" →right arrow Discovered 10 years later as Scandium "Eka-silicon" →right arrow Discovered 17 years later as Germanium

If the next heaviest element did not fit the chemical properties of the column, Mendeleev skipped a box and moved it to the column where it did fit. gthbjlbxtcrfz nf

The single most defining feature of Dmitri Mendeleev's original periodic table was his decision to and use them to predict undiscovered elements . 🚀 How the Feature Worked Mendeleev used the elements above his empty gaps

When these elements were finally discovered with properties almost identical to his predictions, the scientific community universally accepted his periodic system. gthbjlbxtcrfz nf