What subatomic particles make up an atom?

The three main subatomic particles that form an atom are protons, neutrons, and electrons. The center of the atom is called the nucleus. First, let's learn a bit about protons and neutrons, and then we will talk about electrons a little later. Protons and neutrons make up the nucleus of an atom. read more

Particles that are smaller than the atom are called subatomic particles. The three main subatomic particles that form an atom are protons, neutrons, and electrons. The center of the atom is called the nucleus. read more

Subatomic Particles: So That’s What’s in an Atom The atom is the smallest part of matter that represents a particular element. For quite a while, the atom was thought to be the smallest part of matter that could exist. read more

Electrons are negatively charged and are located orbiting the nucleus. They are of negligible mass and don't contribute to the atomic weight. Changes in electrons changes the charge of the atom, creating an ion if it's more/less than the number of protons in the nucleus. read more