Question detail
What did Mendeleev do when he found elements that did not fit his table's order?
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. He rearranged them based on chemical properties.
- B. He removed them from the table.
- C. He changed their atomic masses.
- D. He ignored them completely.
Answer
The correct option is He rearranged them based on chemical properties..
Explanation
The correct option is He rearranged them based on chemical properties.. He rearranged them based on chemical properties. 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 ec9cc81b 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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