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Atoms are made up of protons, neutrons, and electrons. The protons and neutrons are found together in the core of the atom, called the nucleus, which is in the center. The electrons are found moving around the nucleus (at different energy levels) in what is called the electron cloud.
Note that in hydrogen, most all of it is made up of just a lone proton and an electron. There are no neutrons in the most common isotope of hydrogen (1H).

Protons and neutrons, which are called nucleons when they're found in an atomic nucleus, are further made of still smaller subatomic particles called quarks.
See the Related Questions and Web Links below this answer for more information about atoms and their components.
This is a hotly debated topic in science.

All atoms that comprise "matter" (excluding "dark matter" which is outside the scope of this comment) are made up of electrons, neutrons and protons.

Electrons, neutrons and protons are thought to be made up of "quarks" or "leptons"...elementary particles that have distinct mass and charge properties.

A proton is made up of two "up" quarks (with a charge of +2/3) and one "down" quark (with a charge of -1/3) which results in a particle with a charge of +1.

A neutron is made up of two "down" quarks (with a charge of -1/3) and one "up" quark (with a charge of +2/3) which results in a particle with a charge of 0.

An electron is a lepton with a charge of -1.

There are six varieties of quarks (beyond the "up" and "down" quarks, there are "strange", "charm", "top" and "bottom" quarks) and there are six varieties of leptons (Beyond the electron there are "electron neutrino", "Tau", "Tau neutrino", "Muon", and "Muon Neutrino" leptons)

More information can be found in Links (to follow):
The electron, the proton and the neutron are the "building blocks" of the atom. Protons have a positive electrical charge (p+), and neutrons which have about the same mass, are electrically neutral, or have no electrical charged (n0). Electrons, which are much less massive than protons - only about 1/1836th as heavy - have a negative electrical charge (e-). All atoms are made of protons, neutrons and electrons, though most hydrogen (1H1) has just the proton in its nucleus and a lone electron in orbit.

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โˆ™ 2013-03-18 18:11:58
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Q: What are the three particles that make up an atom?
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Related questions

Of the three particles that make up an atom which is the lightest?

The electron.


What are the three subatomic particles that make up the atom?

The three subatomic particles that make up the atom are protons and neutrons inside the nucleus of the atom, and electrons which are located in the electron cloud surrounding the atomic nucleus.


How many different subatomic particles make up an atom?

Three different subatomic particles make up an atom. They are the proton, neutron and electron. -Suzie


Three particles that make up an atom?

An electon, a proton and a neutron.


What are the three subtomic particles that make up an atom?

The three subatomic particles are; protons and neutrons make up the nucleus and in orbitals around this nucleus are the electrons.


How many subatomic particles make up an atom?

An atom is made up of three main subatomic particles called protons, neutrons, and electrons.


What are the tiny particles that make up an atom?

Electrons are the tiny particles that make up an atom.


Three subatomic particles that make up an atom?

Protons, neutrons, and electrons.


What are the three kinds of particles that make up an atom?

electrons, neutrons, and protons


What are the three subatomic particles that make up an atom?

The 3 subatomic particles are a neutron, electron, and proton.


Three subatomic particles from largest to smallest?

The three subatomic particles that make up an atom, from largest to smallest, are neutrons, protons, and electrons.


What are the three sub-atomic particles that make up an atom?

The three subatomic particles that make up an atom are the protons, neutrons, and electrons. The protons are positively charged particles that are located in the atomic nucleus at the center of the atom. The neutrons are particles that have no charge and are also located in the nucleus. The electrons are negatively charged particles that are located in the electron cloud surrounding the nucleus.

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