The neutron is a subatomic particle found in the nucleus of the atom and has no charge. The number of neutrons in the nucleus is different for different elements. In some cases, the number of neutrons can vary within atoms of the same element.Know More
For instance, the normal hydrogen atom does not have neutrons in the nucleus. However, the isotopes of hydrogen, deuterium and tritium, have neutrons in the nucleus. Deuterium has one neutron, while tritium has two neutrons in the nucleus.
Neutrons were discovered by James Chadwick in 1932. The mass of a neutron is 1.675 × 10^-24g, and it is 1,839 times heavier than an electron. Some atoms, such as uranium atoms, have many neutrons in the nucleus, which makes them heavy and unstable.Learn more about Particle Physics
Neutron capture is the process by which neutrons are taken up by the nucleus of an atom. This process is an important part of the synthesis of heavy elements, as it is the only way to produce elements heavier than barium. Neutron capture is also the primary mechanism used to cool fuel rods in nuclear reactors, as control rods made of boron readily absorb stray neutrons to control fluctuations.Full Answer >
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.Full Answer >
The nucleus of an atom always has a positive net charge of one or greater. The presence of protons contained exclusively in the nucleus causes a positive charge.Full Answer >
Rutherford’s atomic theory was that an atom had a central positive nucleus with negative electrons orbiting it. He developed this theory with his gold foil experiment.Full Answer >