La profecía de Mendeléiev

In 1869, Mendeleev revolutionized the periodic table by leaving gaps for undiscovered elements, predicting their properties. He accurately forecasted the existence of Gallium, which was later discovered by Paul Lekot. Gallium's properties matched Mendeleev's predictions, validating his periodic table. Gallium is a low-melting, non-toxic metal used in thermometers and electronics. Its discovery led to the acceptance of Mendeleev's system, with Scandium and Germanium filling more gaps.

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