Exploring Mendeleev's Periodic Table Genius

The video explores the significance of the periodic table and its creator, Dmitri Mendeleev. It highlights Mendeleev's genius in predicting undiscovered elements, such as gallium, by leaving placeholders in the table. His predictions were later validated, showcasing his deep understanding of elemental properties. Despite not receiving a Nobel Prize, Mendeleev's legacy endures with the naming of element 101, mendelevium, in his honor.

What makes the periodic table more than just a trendy icon?

• It was created by Dmitri Mendeleev.

• It is present in every chemistry lab.

• It is a massive slab of human genius.

• It is found on t-shirts and coffee mugs.

Why is Dmitri Mendeleev considered a science hall of famer?

• He discovered the element gallium.

• He arranged elements with similar properties together.

• He made a comprehensive list of known elements.

• He predicted the existence and properties of unknown elements.

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

• It was a mistake in the table.

• It represented an element that had not yet been discovered.

• It indicated a missing property of an element.

• It was a placeholder for a known element.

What did Mendeleev predict about eka-aluminum?

• It would not conduct heat well.

• It would be a gas at room temperature.

• It would have an atomic weight of 68.

• It would be heavier than hydrogen by 100 times.

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Which element was discovered that matched Mendeleev's prediction of eka-aluminum?

• Germanium

• Scandium

• Gallium

• Technetium

What is the melting point of gallium?

• 30 degrees Celsius

• 85 degrees Celsius

• 50 degrees Celsius

• 100 degrees Celsius

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Which element did Mendeleev predict that was later named technetium?

• Eka-silicon

• Eka-carbon

• Eka-manganese

• Eka-boron

When was technetium first isolated?

• 1937

• 1907

• 1955

• 1870

What exclusive honor did Mendeleev receive posthumously in 1955?

• An element named after him

• A university named after him

• A Nobel Prize

• A statue in his honor

How many scientists have an element named after them?

• 20

• 25

• 15

• 10