Multiple choice

Nucleus consists of ___________.

  1. electrons

  2. protons

  3. neutrons

  4. both protons and neutrons

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The atomic nucleus is composed of protons (positively charged) and neutrons (neutral), collectively called nucleons. These particles are bound together by the strong nuclear force. Electrons orbit the nucleus in electron shells and are not part of the nucleus itself.

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