According to the standard model, up and down quarks are the basic components of nucleons. Thus, nuclides can also be considered composite particles of quarks
The term isotopes is often used to mean nuclides, because a nuclide is usually an isotope of an element. Strictly speaking, isotopes are atoms with the same number of protons but different number of neutrons in their nuclei.
|Notation of a nuclide|
In the discussion of decay families, we have used a table to show the relationship of nuclides. This type of table is very convenient for showing nuclear properties. A portion of the table for very light nuclides is given below:
|# of p|
|6He, 0.8 s|
b, 3.51 MeV
b, 0.0186 MeV
|_||0||1||2||3||4 (# of n)|
A complete Table of nuclides is a large chart, and many formats have been employed on the Internet for providing this type of information. For example, The Table of Nuclides gives a complete chart, and when a region is clicked, some portion of the chart is loaded. The Map of Nuclides is divided into several sections, and you may choose a section to view.
Stable nuclides are not radioactive. They remain unchanged for an indefinite period.
Unstable nuclides are radioactive, and they emit alpha, beta, gamma, or proton and they eventually convert to stable nuclides.
The study of nuclides is an experimental and observatory science. It involves data gathering, classification, organization, observation, and theorization about nature.
Evolution of the universe