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www.reference.com/article/neutrons-bf340beaa3c48c3d

Neutrons are always found within the atom's nucleus. They are one of the three main building blocks on an atom, along with protons and electrons. Each type of element has a specific number of each of these building blocks, which can easily be determined by consulting the periodic table of elements.

www.reference.com/article/neutron-star-5ca87f13d8a415ac

A neutron star is a star whose core is made up mostly of neutrons. They are what's left of stars that were four to eight times more massive than the sun. These stars originate from catastrophic explosions called supernovae.

www.reference.com/science/charge-neutron-1ebbd94a5a7553e4

Neutrons are the particles in an atom that have a neutral charge. Protons and electrons are other particles found in an atom. Protons have a positive charge and neutrons have a negative one.

www.reference.com/science/mass-neutron-3dfe989d4cb1c284

A single neutron has a mass of 1.008665 atomic mass units. An atomic mass unit is a very small unit of mass equal to one-twelfth of the mass of a carbon-12 atom. Neutrons have a slightly larger mass than protons, which have a mass of 1.007277 atomic mass units.

www.reference.com/article/many-neutrons-iron-49b4149dd46e73c3

The number of neutrons in an atom of iron is variable, with the most common number being 30. While the number of protons is diagnostic of an atom and does not change without changing the element itself, the number of neutrons varies by isotope.

www.reference.com/science/many-neutrons-carbon-cb9bd09d2084f48c

Most carbon atoms have six neutrons. Although carbon is defined as having six protons, the number of neutrons in a carbon nucleus can vary, which gives rise to the various isotopes of carbon. Fifteen isotopes of carbon, ranging from two to 16 neutrons, have been observed by scientists.

www.reference.com/article/discovered-neutrons-14f474c8b2924efd

Neutrons were first discovered in 1932 by James Chadwick. Chadwick conducted research with Ernest Rutherford who discovered the proton.

www.reference.com/article/many-neutrons-oxygen-743d8d7f4751785f

Oxygen has 8 neutrons, 8 electrons and 8 protons, making it a neutral element. Neutral elements have the same number of neutrons and protons. Oxygen is the eighth element in the periodic table of elements, with an atomic number of 8.

www.reference.com/article/many-neutrons-silver-7950d535a673f966

Silver has 61 neutrons, 47 protons and 47 electrons. The chemical symbol Ag represents silver, stemming from the Latin word "argentum." It has an atomic number of 47.

www.reference.com/article/number-neutrons-lead-76760d79aa962fc5

Lead has 125 neutrons. It also has 82 electrons and 82 protons, and its atomic symbol is Pb. Lead is a metal that has been known since ancient times.