Question 1
Question detail
What evidence led to the conclusion that the positive charge of the nucleus can be divided into whole numbers of protons?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
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Topic
Atoms and isotopes
Question
What evidence led to the conclusion that the positive charge of the nucleus can be divided into whole numbers of protons?
Answer
Later experiments, including those involving the scattering of alpha particles, showed that the nucleus contains discrete positive charges, which correspond to whole numbers of protons. This was supported by the observation that different elements have different atomic numbers, indicating varying numbers of protons.
Explanation
This question tests the understanding of how experimental evidence contributed to the development of atomic theory, specifically regarding the quantization of charge in the nucleus. A strong answer demonstrates knowledge of historical experiments and their implications for atomic structure.
Common mistake
Confusing Protons and Neutrons
Students often confuse protons and neutrons, thinking they have the same charge or role in the nucleus.
Remember that protons are positively charged and determine the atomic number, while neutrons have no charge and contribute to the mass number.
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