d and f BLOCK ELEMENTS

What was the primary reason Newlands' Law of Octaves was initially not widely accepted?

• It was too complex to understand
• It contradicted known chemical reactions
• The scientific community found the musical analogy unconvincing and the pattern failed for heavier elements
• It required the existence of unknown elements

How did the initial scientific community react to Dobereiner's triads?

• It was immediately accepted as groundbreaking
• It was dismissed as coincidence
• It led to the discovery of new elements
• It revolutionized chemistry textbooks

What was a consequence of Mendeleev's periodic table regarding the accepted atomic weights of some elements?

• It proved atomic weights were irrelevant
• It confirmed all atomic weights were accurate
• He ignored atomic weights entirely
• He corrected the accepted atomic weights of some elements to fit the periodic pattern

What common factor was used by Dobereiner, Newlands, Mendeleev, and Meyer to arrange elements?

• Atomic number
• Chemical reactivity
• Density
• Atomic weight

If you were to arrange the scientists mentioned (Dobereiner, Newlands, de Chancourtois, Mendeleev, Meyer) chronologically based on their major contributions, which order is correct?

• Newlands, Dobereiner, de Chancourtois, Mendeleev/Meyer
• Dobereiner, Newlands, de Chancourtois, Mendeleev/Meyer
• de Chancourtois, Dobereiner, Newlands, Mendeleev/Meyer
• Dobereiner, de Chancourtois, Newlands, Mendeleev/Meyer