What 3 things make up an atom?

Hi there!

Three things that make up an atom are electrons, protons, and neutrons.

Electrons orbit the atom.

Protons and neutrons are found in the nucleus.

Have a wonderful day!

An atom [ Neutral atom ] is uniformly composed of 3 basic quantum particles, called electron, neutron and proton

Proton and neutron altogether make up a nucleon, and electron revolves around the nucleonic system with very higher velocity