d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge

Question 2231

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Based on the information provided, what was the ultimate outcome of the successive attempts by Dobereiner, Newlands, de Chancourtois, and Meyer?

They proved that classifying elements was impossible
They led to the discovery of radioactivity
They collectively provided the foundation for Mendeleev's successful Periodic Table
They resulted in the abandonment of atomic theory

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What is the main idea conveyed by the phrase "systematising the knowledge" in the context of the genesis of periodic classification?

Memorizing the properties of all elements
Creating a list of newly discovered elements
Destroying outdated theories about elements
Organizing scattered observations about elements into a coherent, structured framework

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Which statement best describes the relationship between the work of Mendeleev and Meyer?

Mendeleev copied Meyer's work
Meyer's work was a refinement of Mendeleev's
They worked independently but arrived at the same fundamental conclusion simultaneously
They collaborated closely on their research

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What role did the prediction of new elements play in validating Mendeleev's Periodic Table?

It showed that Mendeleev could make lucky guesses
It proved that atomic weights were incorrect
It highlighted the table's aesthetic appeal
Accurate predictions of Gallium and Germanium confirmed the table's underlying principle

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Which of the following best summarizes the key limitation of classification attempts before Mendeleev?

They ignored the role of the nucleus
They focused too much on physical properties
They were either too specific (triads) or too general/broken (octaves, cylinders) to provide a complete system
They used incorrect atomic weights