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.Continue Reading
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
According to Encyclopædia Britannica, a beta particle can have either a negative charge (if it is an electron) or a positive charge (a positron). Beta particles are emitted by unstable atomic nuclei. The emission of beta particles is called beta decay.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 >
The Danish physicist Niels Bohr developed a model of the atom that combined Ernest Rutherford's discovery of the nucleus with the quantum ideas proposed by Max Planck. This solved the problem of why the electrons did not immediately collapse into the nucleus. Bohr received the Nobel Prize in Physics for his discovery in 1922.Full Answer >
An electron is a negatively charged subatomic particle that orbits around the nucleus of an atom. The negative charge of the electrons is balanced by the positive charge of the protons in the nucleus. Electrons have a much lower mass than protons.Full Answer >