Which particles are located in the nucleus of an atom?

Atomic Nucleus Composition: The nucleus of an atom contains protons and neutrons.

Protons (C): Positively charged particles.

Neutrons (A): Neutral particles with no charge.

Electron Positioning:

Electrons (B): Negatively charged particles that orbit the nucleus, not located within it.

Positron Clarification:

Positrons (D): Positively charged particles similar to electrons, but they are not typically found in the nucleus of an atom in stable matter.

Conclusion: The particles located in the nucleus are protons and neutrons.

References:

Atomic Nucleus: Composition and characteristics of atomic particles.