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PIMSO 2025 - Science - Senior Secondary - National Round Question 19

PIMSO Science · PIMSO 2025 - Science - Senior Secondary - National Round

Question 19

What particles make up an atom?
  1. Protons and Neutrons
  2. Protons and Electrons
  3. Neutrons and Electrons
  4. Protons, Neutrons and Electrons