Question detail
How did Mendeleev change the order of elements in his 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. He placed elements in order of their chemical properties.
- B. He arranged elements by increasing atomic mass only.
- C. He grouped all metals together regardless of properties.
- D. He ignored the properties of elements entirely.
Answer
The correct option is He placed elements in order of their chemical properties..
Explanation
The correct option is He placed elements in order of their chemical properties.. He placed elements in order of their chemical properties. is correct because it directly supports the approved learning objective to explain how Mendeleev changed some element orders based on chemical properties. 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 0fbb7cef keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Mendeleev's Element Order
Students often think Mendeleev only arranged elements by atomic weight without considering their chemical properties.
Emphasize that Mendeleev prioritized chemical properties over atomic weight when rearranging elements in his periodic table.
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