a particle found in the nucleus of an atom; it has a mass almost identical to that of the proton but has no electric charge.
A subatomic particle with zero charge and rest mass of 1.6749286 x 10^-27 kilograms. Neutrons, like protons, are found in atomic nuclei. By themselves, neutrons are unstable and decay into a proton, electron, and antineutrino through the beta minus decay process. See also
A subatomic particle with a mass of about 1 amu and no charge.
A baryon that carries no charge. It is made of two down quarks and one up quark. The neutron is located in the nucleus and is "stuck" to the protons by the residual strong force. See also: nucleus, proton, quark, Journey - Neutron
Neutrons, which have no electrical charge, and protons, which have positive charge, are the particles which make up the nuclei of atoms.
a subatomic particle having no charge and a mass of one amu non-bonding electrons valence electrons on an atom that are not involved in a chemical bond
Electrically neutral nuclear particle in the nucleus of an atom.
The part of an atom that has no charge. It is part of the nucleus. More about neutrons...
A fundamental subatomic particle having an electric charge of 0 and a rest mass of 1.67 x 10-24 gm.
a particle in the atomic nucleus with mass virtually equal to the proton's but with no charge
One of the constituents of atoms. Along with the proton, the neutron is found in the nuclei (centers) of atoms. Neutrons have no electric charge, and are composed of two down quarks and an up quark.
atomic particles that have no charge and have a mass number of 1.
Neutral elementary particle of about the same mass as the proton. Protons and neutrons are the basic constituents of atomic nuclei.
The uncharged sub-particle(s) of an atom.
A neutral particle of approximately unit mass, present in all atomic nuclei, except those of ordinary hydrogen. Neutrons are required to initiate the fission process, and large numbers of neutrons are produced by both fission and fusion reactions. See; Nucleus.
A particle that is similar to a proton, but with zero electric charge, found in the nucleus of atoms. It's made up of three smaller particles called quarks
A neutral charge particle forming part of an atom.
chargeless particle, typically found in the nucleus of an atom, consisting of three quarks (two down-quarks, one up-quark).
Like protons, neutrons weigh one atomic mass unit and are housed in the nucleus of an atom. Unlike both protons and electrons, neutrons are neutral (without charge) subatomic particles.
Elementary particle in the nuclei of all atoms (except hydrogen-1). It has a relative mass of 1 and no electric charge. Compare electron, proton.
an uncharged subatomic particle. Neutrons sustain the fission process in nuclear reactors.
A neutrally charged particle that, along with protons, constitutes the nucleus of an atom.
(neu'-tron) A fundamental particle of matter having almost the same mass as the proton, but without an electric charge. It is a constituent of the nucleus of all elements except hydrogen. See atom.
A subatomic particle, found in the nucleus of the atom, that has no electromagnetic charge.
subatomic particle found in the nucleus of the atom, with no charge and a mass of approximately one amu.
A neutral elementary particle with a rest mass of 1.67482 x 10*-27 kilogram and spin ½ ; classified as a baryon. In the nucleus of an atom it is stable but when free it decays.
Particle in atomic nuclei. A neutron has no charge but a little more mass than the other constituent of atomic nuclei, the proton. Neutrons are made up of three quarks. If neutrons are not bound in an atomic nucleus they decay into a proton, an electron and an antineutrino.
One of the particles which are found in the nucleus of all atoms except hydrogen. It has approximately the same mass as the proton but no charge.
A subatomic nuclear particle that has no electrical charge but a mass almost the same as a proton. Neutrons comprise about half of the mass of an atom.
A neutral elementary particle that occurs in the nuclei of elements (except ordinary hydrogen). Free neutrons decay into a proton, an electron and an anti-neutrino. A neutron is about 1,838 times heavier than an electron.
the most important of the subatomic particles because its capacity to pass through other atoms allowed for intense experimental bombardment of matter, leading to chain reactions of unbelievable force. (p. 927)
A massive, neutral elementary particle, one of the fundamental constituents of an atom. Neutrons and protons are similar in mass, about 1830 times more massive than electrons.
a heavy subatomic particle with zero charge; found in an atomic nucleus.
A subatomic particle, approximately equal in mass to a proton, without any electrical charge. Save for ordinary hydrogen, all atomic nuclei contain both protons and neutrons.
An uncharged particle found in the nucleus of every atom except that of hydrogen.
chargeless heavy subatomic particle that appears along with protons in all nuclei other than hydrogen
a uncharged nuclear particle with a mass very slightly higher than that of a proton
neutral charged subatomic particle of mass 1 in the nucleus of atoms.
A subatomic particle with no charge and with mass approximately equal to that of the proton.
An uncharged composite particle found in all atomic nuclei except that of ordinary hydrogen. Its mass is almost identical to that of the proton.
A fundamental particle that does not carry a positive or a negative charge.
The uncharged particle found along with protons in atomic nuclei.
A baryon with electric charge zero. Its basic structure is two down quarks and one up quark.
A particle that may be emitted from the nucleus of atoms and carries no electrical charge.
A sub-atomic particle found in the nuclei of an atom. Unlike the proton and electron, the neutron has no net charge.
Nuclear particle that has zero charge and a mass of 1u ( atomic mass unit)
A subatomic particle with a no electrical charge. See Atomic Structure. It is
a fundamental particle with approximately the mass of a proton, but zero charge, commonly found in the nucleus of atoms.
An uncharged elementary particle that has a mass nearly equal to that of a proton and is present in all known atomic nuclei except hydrogen.
high mass atomic particle with zero charge.
An electrically neutral "building block" of atoms, found in the nucleus of the atom, along with protons. Neutrons are emitted in nuclear fission and nuclear fusion.
An elementary particle with zero charge and mass about equal to a proton; enters into the structure of the atomic nucleus
An electrically neutral elementary particle. It is often part of the nucleus of an atom and is 1839 times heavier than an electron.
An uncharged particle, the other types that nuclei are made of.
an uncharged neutral particle located in the nucleus of most atoms which serves as a stabilizer.
a bond between a proton and an electron, which is in a neutral state
a constituent of the atomic nucleus and interacts directly with the nuclei in tissue
a cube, with each corner occupied by a rotating pair of electron-positron particles
a hydrogen atom without energy and as such does not radiate energy
an electrically neutral subatomic particle with approximately the mass of a proton which is commonly found in the nuclei of all atoms (except hydrogen)
a neutral particle in that it has no electrical charge
an uncharged particle of about the same mass as the proton
an uncharged particle with the same spin as an electron and with mass slightly greater than a proton mass
a particle filled with need
a particle inside an atom's nucleus (except hydrogen) and has zero charge An electron is a smaller particle than a proton and is found outside the nucleus
a proton with an electron inside of it, thus it is electrically neutral
a subatomic particle found in the nucleus of every atom except that of simple hydrogen
a subatomic particle that has no electric charge
a sub-atomic particle, within the nucleus of an atom, which has unit mass and zero charge
a very small, electrically neutral particle usually found in the nucleus
a nuclear particle with a charge of zero and a mass number of one amu.
An uncharged particle, very similar to the proton, which accounts for roughly half the particles in an atomic nucleus.
A particle with zero electric charge and a mass only slightly greater than that of the proton. Along with protons, neutrons are present in atomic nuclei (the only exception is the nucleus of hydrogen-1, which consists of a single proton).
A neutral particle found in the nucleus of atoms heavier than hydrogen. The rest mass of a neutron is slightly heavier than a proton. Free neutrons are unstable and undergo beta decay to produce a proton, an electron and an antineutrino with a mean lifetime of about 14 minutes. Neutrons are not fundamental but are baryons. A neutron is composed of one up and two down quarks, giving a net charge of zero.
Subatomic particle that is part of the atom nucleus. This doesn't transport any electric charge.
A particle in an atom that has no charge and is electrically neutral.
One of the particles in an atomic nucleus. These particles have no electric charge, but they hold together the protons (positive particles in a nucleus), and account for roughly half of the particles in the nucleus. Neutrons are fermions, and are believed to form the majority of the matter in a neutron star.
A common neutral particle equal in size to a proton, often found in the nucleus of atoms. Composed of two down quarks and one up quark.
One of the three fundamental particles which form atoms, the neutron has the mass of a proton but no electrical charge. Neutrons are emitted when large atomic nuclei are bombarded with alpha particles.
A neutral subatomic particle in the baryon family, having a mass 1,839 times that of the electron, stable when bound in an atomic nucleus, and having a mean lifetime of approx. 1.0 x 103 seconds as a free particle.
NEW-tron A particle in an atom's nucleus that is electrically neutral and has one mass unit. 32
An uncharged particle having a mass very close to that of a hydrogen atom, which is usually stable when within the nucleus, but is unstable otherwise.
The neutron is a fundamental particle that is present in every atom except hydrogen. It has around the same mass as the proton and no charge. Atomic Structure
An uncharged particle found in the nucleus of every atom heavier than ordinary hydrogen; neutrons sustain the fission chain reaction in nuclear reactors.
a nuclear particle that does not contain any charge and has a mass almost identical to that of a proton.
A neutron is a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen. ORIGIN Early 20th century. From neutral + -on.
A nuclear particle having a mass similar to a proton but having no electrical charge. During negative beta decay (-), a neutron disintegrates into a proton an electron and an anti-nuetrino which are then ejected from the nucleus. Neutrons can exist outside of the nucleus and have a high potential for radiation damage since they lose energy in biological materials through scattering. Shielding for neutron sources involves using materials containing large amounts of hydrogen.
An uncharged particle in the nucleus of every atom heavier than hydrogen. A free neutron is unstable. with a half life of 13 minutes, it will decay into a proton, electron and a neutrino.
Uncharged atomic particles of essentially the same mass as protons. In the most common stable atoms the number of neutrons is equivalent to the number of protons.
a particle in the nucleus that has no charged.
A particle that appears in the nucleus of all atoms except hydrogen. Neutrons are one of three basic particles that make up the atom. Neutrons have no electrical charge.
a neutral particle found in the nuclei of atoms
An neutral hadron that is stable in the atomic nucleus but decays into a proton, an electron and an antineutrino with a half-life of 12 minutes outside of the nucleus. In the nucleus it has a rest mass slightly greater than the proton and a neutral charge.
A particle found in the nuclei of atoms, similar to a proton but with no electric charge. Among light nuclei (helium, carbon, nitrogen), the ones that are most stable contain equal numbers of protons and neutrons. In heavier elements, the most stable ones have majority of neutrons, growing with mass. Varieties of nuclei also exist ("isotopes") which have other ratios between their numbers of protons and neutrons, but when the departure from the "most stable ratio" becomes large, neutrons can convert to protons + electrons (or vice versa), producing one form of radioactivity.
A small particle possessing no electrical charge and typically found within an atom's nucleus. A neutron has about the same mass as a proton. [For additional information see Understanding Radiation: What is an Atom?.
An electrically neutral particle of mass essentially equal to that of the proton. A free neutron is unstable, decaying (with a half life of about 12 minutes) to an electron and a proton. (To say that the half life of a neutron is 12 minutes means that of a group of N neutrons, N/2 of them will decay before 12 minutes, and N/2 of them after 12 minutes.)
a subatomic particle with a neutral (no) electrical charge
an atomic particle with a mass of 1 AMU and no charge.
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.
A subatomic particle, contained in the nucleus of an atom. It has no electrical charge and a mass similar to that of a proton.
Atomic particles having approximately the same mass as a hydrogen atom; very penetrating.
An uncharged subatomic particle in the nucleus of an atom. The large (mass approximately equal to 1 atomic mass unit), electrically neutral particle that may occur in the atomic nucleus.
A basic constituent of the atomic nucleus. The neutron is a fundamental particle, has a mass of 1.008664904 ± 0.000000014 atomic mass units (939.56563 ± 0.00028 MeV). Free, unbound neutrons are produced in fission and in some radioactive decay processes (especially beta decay). A free neutron is unstable, having a half life of 614.6±1.3 s and decaying by β- decay. The neutron is a hadron that is composed of three quarks, udd, and it has a spin-parity of 1/2+ and a magnetic moment of -1.91304275±0.00000045. Symbol: . Related to Bragg neutron. Related to neutron. Related to proton.
Neutron is an elementary particle on spin 1/2 and zero charge. The free neutron has a mean lifetime of 887 seconds. Neutrons and protons, which are collectively called nucleons, are the constituents of the nucleus.
an electrically neutral subatomic particle in the baryon family, having a mass 1,839 times that of the electron, stable when bound in an atomic nucleus, and having a mean lifetime of approximately 16.6 min. as a free particle.
A particle with no charge made up of three quarks,one up and two downs. The neutron and proton make up the nucleus of an atom.
A neutron is an uncharged particle found in the nucleus of an atom. A neutron, like a proton, contributes one atomic mass unit to the total atomic weight of an atom. ( www.studyisland.com) Neutrons are heavy nuclear particles with no electrical charge and approximately the same mass as protons. With protons, they are the principal components of atomic nuclei. They are composed of two "down" quarks and one "up" quark. www.mira.org/fts0/glossx.htm
Neutrons are uncharged particles that are located in the nucleus. They have a mass equal to that of the proton.
One of the two types of particle that makes up the nucleus of an atom, the other being the proton. A neutron has the same mass as a proton, but no electrical charge.
A particle found in the nucleus of an atom. It is almost identical in mass to a proton, but carries no electric charge.
A non-charged nuclear particle with the same mass as the proton.
An uncharged elementary particle with a mass slightly greater than that of the proton. Neutrons are found in the nucleus of every atom heavier than hydrogen-1.
The particle having no electrical charge, found in the nucleus of the atom.
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
A particle commonly found in the nucleus of an atom with approximately the mass of a proton, but zero electrical charge.
A component of an atom similar in size and mass to protons but electrically neutral.
a particle that is found in the nucleus of an atom and has zero charge and approximately the same mass as a proton. They are used to sustain fission chain reactions.
One of the constituents from which atomic nuclei are built. It is composed of 2 down and and one up quark.
An electrically neutral elementary particle in the atomic nucleus having the mass of one proton.
is a component of most atomic nuclei, without electric charge, and of approximately the same mass as the proton (positively charged component).
a neutral particle made of three quarks found in the nucleus of an atom
A particle with a neutral charge that is located in the nucleus of an atom.
A neutral, uncharged subatomic particle used in cancer radiation treatment.
an uncharged (neutral) elementary particle, stable when bound in an atomic nucleus and having a mean lifetime of about 12 minutes as a free particle (note: the neutron is found in all known elementary nuclei except for the hydrogen nuclei).
An uncharged particle that is found in the nucleus of an atom. The mass of the neutron is 1.675 x 10-24g, which is slightly larger than the mass of the proton.
A baryon with electric charge zero; it is a fermion with a basic structure of two down quarks and one up quark (held together by gluons). The neutral component of an atomic nucleus is made from neutrons. Different isotopes of the same element are distinguished by having different numbers of neutrons in their nucleus.
An elementary particle slightly heavier than a proton, with no electric charge.
One of the basic particles that make up a nucleus. A neutron and a proton have about the same mass, but the neutron has no electrical charge.
A subatomic particle that has no electrical charge. Neutrons are found at the nucleus of an atom, alongside protons.
One of the basic particles which make up an atom. A neutron and a proton have about the same weight, but the neutron has no electrical charge.
A neutral subatomic particle having a mass of 1.0087 amu.
(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.
One of two types of particles at the center of an atom; the other is the proton.
Elementary particle with no charge and mass slightly greater than that of a proton.
An uncharged nuclear particle. The number of neutrons in an atom define the atomic isotope.
Subatomic particle in the nucleus of an atom and having no electrical charge.
Neutrons are part of the nucleus of an atom. Neutrons are, as the name implies, neutral in their charge. That is, they have neither a positive nor a negative charge. Neutrons are about the same size as protons. back to
an electrically neutral particle found in the nucleus of the atom. Free neutrons which are released from nuclear reactions are very penetrating.
A particle in the nucleus of an atom weighing about the same as a proton, but carrying no charge.
an elementary particle, similar to a proton, but with a neutral charge
A basic particle that is a little heavier than a proton. It is said to have neutral electrical charge.
A subatomic particle with about the mass of a proton and no electric charge; one of the main constituents of an atomic nucleus; the union of a proton and an electron.
An elementary particle with atomic mass but no charge emitted during fission.
Electrically neutral an elementary particle. A neutron is 1839 times heavier than an electron.
A basic particle in an atom’s nucleus that has a neutral electrical charge.
A subatomic particle with no charge that is usually found in the nucleus of an atom.
subatomic particle with zero charge (neutral charge) that is found in the nucleus of an atom. It is slightly more massive than the positively-charged proton.
Elementary particle with a mass approximately the same as that of a proton and is electrically neutral.
Uncharged subatomic particle located with the protons in the center of the atom (p.36-40, 208-209).
An electrically neutral elementary particle with a large mass; one of the class of particles known as baryons.
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" isotopes such as U-238, Pu-239. Sometimes atomic nuclei simply capture neutrons.
An elementary particle with roughly the same mass as a proton, but which is electrically neutral. Along with protons, neutrons form the nuclei of atoms.
An elementary particle with unit atomic mass approximately and no electric charge.
A neutral (no electric charge) elementary particle having slightly more mass than a proton, and which resides in the nucleus of most atoms.
A fundamental particle found in the nucleus of an atom.
A neutral (no electric charge) elementary particle having slightly more mass than a proton and residing in the nucleus of all atoms other than hydrogen.
A sub-atomic particle with no charge and a mass of 1.675 × 10-27 kg. Neutrons are found in the nucleus of atoms. Compare to the proton.
A neutron is 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. Classifying materials
subatomic particle with no electric charge, and with a mass of 1.67482 X 10E-24 gram. Protons and neutrons comprise atomic nuclei; and they are both classed as nucleons.
Elementary nuclear particle with a mass (1.00893 mass units) approximately the same as that of a hydrogen atom. It is electrically neutral.
An atomic particle with no charge and about the mass of a proton.
A particle in the nucleus of an atom that has no electrical charge, but a mass equal to that of a proton plus an electron.
a particle in the atomic nucleus with a mass approximately equal to that of the proton but with no charge.
An atomic particle having no electrical charge.