Multiple choice

The nucleus of an atom consists of

  1. electrons

  2. neutrons

  3. protons and neutrons

  4. protons, neutrons and electrons
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The nucleus contains protons (positively charged) and neutrons (neutral), which together form the dense core of an atom. Electrons orbit around the nucleus in electron shells, not within it. Option D incorrectly includes electrons in the nucleus, while options A and B only mention one component each.

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