Question detail
What did the plum pudding model fail to explain?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Atoms and isotopes
Question
- A. The existence of protons
- B. The arrangement of electrons
- C. The concentration of mass in the nucleus
- D. The charge of the atom
Answer
The correct answer is C: The concentration of mass in the nucleus.
Explanation
The correct answer is C: The concentration of mass in the nucleus. This supports the learning objective "Describe how the discovery of the electron led to the plum pudding model." in The development of the model of the atom because it uses the correct atomic and nuclear radiation relationship for Atoms and isotopes. The other options are less suitable because they do not match the required The development of the model of the atom idea: The existence of protons; The arrangement of electrons; The charge of the atom.
Common mistake
Misunderstanding the Plum Pudding Model
Students often think the plum pudding model describes electrons as being randomly distributed throughout a solid mass of positive charge, rather than embedded within it.
Clarify that the plum pudding model depicts a ball of positive charge with negative electrons embedded in it, rather than a solid mass.
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