Question

What is the usual symbol for neutrons?

Answer 1

In the year $1920$ , British physicist Ernest Rutherford, who was born in New Zealand, proposed the concept of neutrons for the first time. James Chadwick, a British scientist, is credited with discovering neutrons in $1932$ .In $1935$ , he was awarded the Nobel Prize in Physics for this discovery.

Complete answer:
The neutron is a subatomic particle, which is represented by the symbol $n$ or ${n^0}$ .It has a mass slightly larger than that of a proton and a neutral charge (neither positive or negative). Atomic nuclei are made up of protons and neutrons. Protons and neutrons are both referred to as nucleons because they function similarly within the nucleus and each have a mass of about one atomic mass unit.
A neutron has no electric charge linked with it. Neutrons are neutrally charged subatomic particles as a result.
A neutron's mass is approximately $1.008$ atomic mass units. The mass of a neutron is approximately $1.674 \times {10^{ - 27}}kg$ when measured in kilograms. Because neutrons do not have an electric charge, mass spectrometry cannot be used to estimate their mass directly.
The magnetic moment of neutrons is not equal to zero, despite the fact that they are considered neutral particles. Despite the fact that electric fields have no effect on neutrons, magnetic fields have an influence on these subatomic particles.

Note:
By subtracting the mass of a proton from the mass of a deuterium nucleus (deuterium is a hydrogen isotope with one proton, one electron, and one neutron in its atomic structure), the mass of the neutron may be computed. Because the mass of the electron is so little in comparison to the proton and neutron, the mass of the neutron may be estimated by subtracting the proton's mass from the mass of the deuterium atom.