Question detail
What was one significant outcome of Mendeleev's periodic table?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The periodic table
Question
- A. It accurately predicted the existence of undiscovered elements.
- B. It grouped all elements by their atomic mass only.
- C. It placed all metals in the same row regardless of properties.
- D. It ignored the chemical properties of elements.
Answer
The correct option is It accurately predicted the existence of undiscovered elements..
Explanation
The correct option is It accurately predicted the existence of undiscovered elements.. It accurately predicted the existence of undiscovered elements. is correct because it directly supports the approved learning objective to explain how discovery of predicted elements supported Mendeleev's table. This is tested in the subtopic Development of the periodic table within The periodic table, so the reasoning must stay within AQA GCSE Chemistry 8462 Unit 4.1. The other options are weaker because they either confuse a nearby Chemistry concept, use the wrong subtopic context, or do not answer Development of the periodic table precisely. Repair marker a9e1495a keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Misunderstanding Mendeleev's Predictions
Students often think that Mendeleev's predictions were purely random rather than based on chemical properties.
Emphasize that Mendeleev used observed chemical properties to predict the existence and properties of undiscovered elements, which later supported his periodic table.
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