What are the basic particles of an atom?
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Electrons
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Protons
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Neutrons
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Molecules
A,B,C
Correct answer
Explanation
Atoms consist of three basic particles: protons (positively charged in the nucleus), neutrons (neutral in the nucleus), and electrons (negatively charged orbiting the nucleus). These fundamental particles determine an atom's properties. Molecules (option D) are formed when atoms bond together, not basic particles of atoms.