What is the nucleus of an atom?

The small dense center containing protons and neutrons.

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  1. The small dense center containing protons and neutrons ✔
  2. The outer shell of electrons
  3. The empty space between atoms

Why: The nucleus is the tiny, dense central region holding protons and neutrons.

Huh, didn't know that: The nucleus is the tiny, dense central region holding protons and neutrons.

The dad joke
The nucleus is the atom's dense little core.
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References

Answer: The small dense center containing protons and neutrons. The nucleus is the tiny, dense central region holding protons and neutrons.

  1. Nuclear physics en.wikipedia.org/wiki/Nuclear_physics
    the atom had a very small, very dense nucleus containing most of its mass
    Checked 2026-11-07.

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