Which subatomic particles are located in the nucleus of an atom?

• A. Protons and neutrons
• B. Neutrons and electrons
• C. Only electrons
• D. Electrons and protons

Answer: (A)

Verified step by step guidance

1. Recall the structure of an atom, which consists of a nucleus and an electron cloud surrounding it.
2. Understand that the nucleus is the dense central part of the atom where most of the mass is concentrated.
3. Identify the subatomic particles: protons, neutrons, and electrons.
4. Know that protons and neutrons are located inside the nucleus, while electrons orbit around the nucleus in the electron cloud.
5. Therefore, the subatomic particles located in the nucleus are protons and neutrons.