Question detail
In an atom, which component contains most of the mass?
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 nucleus
- B. The electrons
- C. The protons
- D. The neutrons
Answer
The nucleus
Explanation
The nucleus, which contains protons and neutrons, holds almost all of the atom’s mass.
Common mistake
Nucleus Size Misconception
Students often describe the nucleus as being large compared to the entire atom.
Emphasize that the nucleus is actually very small compared to the overall size of the atom, which is mostly empty space.
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