Question detail
What significant change did Bohr make to the nuclear model of the atom?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes
Question
- A. He placed electrons at specific distances from the nucleus.
- B. He introduced the concept of neutrons.
- C. He proposed that atoms are indivisible.
- D. He suggested that electrons have no charge.
Answer
The correct option is He placed electrons at specific distances from the nucleus..
Explanation
The correct option is He placed electrons at specific distances from the nucleus.. He placed electrons at specific distances from the nucleus. is correct because it directly supports the approved learning objective to explain how the history of atomic models shows scientific methods and theories developing over time. This is tested in the subtopic The development of the model of the atom within A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, 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 The development of the model of the atom precisely. Repair marker c4608250 keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Misunderstanding Scientific Progress
Students often think that scientific models are completely replaced rather than improved upon over time.
Emphasize that scientific models evolve as new evidence is discovered, building on previous ideas rather than completely discarding them.
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