Which particles can be found in the nucleus of an atom? alpha particles protons and neutrons neutrons and electrons protons and electrons

protons and neutrons

Explanation:

An atom is smallest unit of a matter or substance.It consist of three subatomic particles : electrons, protons, neutrons.

Protons and neutrons are located in the center of an atom where while mass of an atom is concentrated and is called as nucleus.

Atomic mass = Number of protons + Number of neutrons

Electrons are located outside the nucleus where they orbit in different energy levels around the nucleus.

Hence, from the given options the correct option describing the nucleus of an atom is protons and neutrons .