La profecía de Mendeléiev

La profecía de Mendeléiev

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Science, Physics, Chemistry

4th - 9th Grade

Hard

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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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2 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What are some applications of gallium mentioned in the text?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What elements were discovered soon after gallium, and what were their new names?

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