Which of the following particles is found in the nucleus of an atom?

The nucleus of an atom is composed of two types of particles: protons and neutrons. Protons are positively charged particles that define the atomic number of an element, while neutrons are neutral particles that contribute to the atomic mass but do not affect the charge of the nucleus.

The presence of both protons and neutrons in the nucleus is essential for the stability and identity of an atom. The number of protons determines the element itself, while the number of neutrons can vary, resulting in different isotopes of the same element. This combination of protons and neutrons in the nucleus is fundamental to understanding atomic structure, nuclear reactions, and various physical properties of elements.

In contrast, electrons, which are negatively charged, orbit around the nucleus and do not reside within it. Understanding the distinction between these particles and their locations helps clarify the structure and behavior of atoms in various contexts, including chemical reactions and physical interactions.