In the context of small molecules and atomic structure, which particles are found in the nucleus of an atom?

• A. Protons and neutrons
• B. Electrons and neutrons
• C. Electrons and protons
• D. Electrons only

Answer: (A)

Verified step by step guidance

1. Recall the basic structure of an atom, which consists of a nucleus and an electron cloud surrounding it.
2. Understand that the nucleus is the central part of the atom and contains particles that contribute most of the atom's mass.
3. Identify the types of subatomic particles: protons, neutrons, and electrons.
4. Know that protons carry a positive charge and neutrons have no charge; both are located in the nucleus.
5. Recognize that electrons are negatively charged and orbit the nucleus in the electron cloud, not inside the nucleus.