Nuclear Physics definitions

Published by admin on

Atomic/proton number
Total number of protons in a nucleus. In an uncharged atom this is the number of electrons too. This determins the chemical properties of the element
Nucleon/mass number
Total number of protons and neutrons in a nucleus. Since electrons have nearly no mass, it also gives the mass
Neutron number
Total number of neutrons in an atom. Different atoms of the same element can have numbers
Nuclide
A specific nucleus; the ratio between the number of neutrons and protons in a nuclide determines its nuclear stability
Isotope
An atom including a particular nuclide. There are usually several types of these per element; each with the same proton number but different neutron numbers. These have the same chemical property but different nuclear property
Nucleus
The central region of an atom which contains all the positive charge and most of the mass
Neutron
A particle in the nucleus with no charge
Proton
Particle in the nucleus with positive charge
Electron
Particle just outside the nucleus with negative charge
Nucleon
A particle found in the nucleus (proton or neutron)
Nuclei
Plural of nucleus
Nuclear
Relating to the nucleus
Categories: Atomic Physics