Most of an atom's mass is concentrated in the:
ANucleon
BNuclide
CNodule
DNucleus
Answer & Solution
Correct answer: D. Nucleus
1. Electrons are extremely light by comparison.
2. The heavy part sits at the centre.
3. So the mass is concentrated in the nucleus.
_Source: OpenStax Chemistry 2e, Chapter 2, Atoms, Molecules, and Ions._
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