
1) Animated series villain 2) Atomic component 3) Atomic particle 4) Beta decay product, at times 5) Bit in an atom 6) Bit of an atom 7) Boy genius Jimmy of animation 8) DC Comics supervillain 9) Deuterium has one 10) Elementary particle 11) Neutral subatomic particle 12) Nucleon 13) Particle in an atomic nucleus
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1) Jimmy
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https://www.crosswordclues.com/clue/neutron

(n,
10n) Compare with proton and electron. An elementary particle found the atomic nucleus of all stable atoms except the hydrogen-1 atom. Neutrons have no charge and have a mass of 1.008665 daltons.
Found on
http://antoine.frostburg.edu/chem/senese/101/glossary/n.shtml

A neutral subatomic particle having a mass of 1.0087 amu.
Found on
http://www.chemistry-dictionary.com/definition/neutron.php

an elementary particle having no electric charge, a rest mass of 1.67495 ?? 10
-27 kg, and a mean life in the free state for ß-decay of approximately 1 000 s
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=881-02-52

An atomic particle with no charge and a mass almost equal to a proton.
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http://www.encyclo.co.uk/local/20448

An elementary particle with unit atomic mass approximately and no electric charge.
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http://www.encyclo.co.uk/local/20474

An uncharged elementary particle found in the nucleus of every atom except hydrogen. Solitary mobile neutrons travelling at various speeds originate from fission reactions. Slow (thermal) neutrons can in turn readily cause fission in nuclei of 'fissile' isotopes, e.g. U-235, Pu-239, U-233; and fast neutrons can cause fission in nuclei of 'fertile' ...
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http://www.encyclo.co.uk/local/20725

A neutral subatomic particle having a mass of 1.0087 amu.
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http://www.encyclo.co.uk/local/20728

<physics> An elementary atomic particle that has no charge and a mass that is approximately the same as that of a proton. Neutrons are found in allatoms except the lightest isotopes of hydrogen. ... (09 Jan 1998) ...
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http://www.encyclo.co.uk/local/20973

(noo´tron) an electrically neutral or uncharged particle of matter existing along with protons in the atoms of all elements except the mass 1 isotope of hydrogen.
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http://www.encyclo.co.uk/local/21001

a small atomic particle possessing no electrical charge typically found within an atom's nucleus. Neutrons are, as the name implies, neutral in their charge. That is, they have neither a positive nor a negative charge. A neutron has about the same mass as a proton. See also alpha particle, beta particle, gamma ray, nucleon, x-ray.
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http://www.encyclo.co.uk/local/21808

A particle that is found in the nucleus of an atom, has a mass approximately equal to that of a proton, and has no electric charge.
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http://www.encyclo.co.uk/local/22291

A subatomic particle, contained in the nucleus of an atom. It has no electrical charge and a mass si
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http://www.encyclo.co.uk/local/22392
(n) Type: Term Pronunciation: nū′tron Definitions: 1. An electrically neutral particle in the nuclei of all atoms (except hydrogen-1) with a mass slightly greater than that of a proton; in isolation, has a half-life of about 10.3 minutes.
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http://www.medilexicon.com/medicaldictionary.php?t=60344

An electrically neutral elementary particle in the atomic nucleus having the mass of one proton.
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http://www.scientificpsychic.com/etc/geology-glossary.html

A particle found in the nucleus of an atom. It is almost identical in mass to a proton, but carries no electric charge.
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http://www.shodor.org/UNChem/glossary.html

An electrically neutral elementary particle. A neutron is 1839 times heavier than an electron.
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https://www.encyclo.co.uk/local/20087

A sub-atomic particle, within the nucleus of an atom,which has unit mass and zero charge. A member of thebaryon and hadron familiesof elementary particles. It was discovered by Chadwick in 1932.Protons and neutrons comprise atomic nuclei and they are both classed as nucleons.Click on an item to paste into clipboard or use clipboard symbol at end to...
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https://www.encyclo.co.uk/local/20687
noun an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus
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https://www.encyclo.co.uk/local/20974

A baryon with electric charge zero. Its basic structure is two down quarks and one up quark.
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https://www.encyclo.co.uk/local/21257

A neutral particle (baryon) consisting of two down and oneup quarks which is found in and makesup the atomic nucleus.
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https://www.encyclo.co.uk/local/21322

A particle in the nucleus of an atom, which is without electrical charge and with approximately the same mass as a proton.
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https://www.encyclo.co.uk/local/22327

a heavy subatomic particle with zero charge; found in an atomic nucleus.
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https://www.encyclo.co.uk/local/22434

an elementary particle having no charge, mass slightly greater than that of a proton, and spin of : a constituent of the nuclei of all atoms except those of hydrogen. Symbol: n
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https://www.infoplease.com/dictionary/neutron
No exact match found.