Uses of radioisotopes carbon dating
This process, known as radioactive decay, generally results in the emission of alpha or beta particles from the nucleus.
It is often also accompanied by emission of gamma radiation, which is electromagnetic radiation, like X-rays.
For carbon, there are a lot of C-12, a couple of C-13, and a few C-14 atoms.
When you average out all of the masses, you get a number that is a little bit higher than 12 (the weight of a C-12 atom).
The alkali metals also include lithium, sodium, rubidium, cesium, and francium. Potassium is so active that it never occurs free in nature.
Primordial nuclides are radioactive elements whose half-lives are comparable to the age of our solar system and were present at the formation of Earth.These three kinds of radiation have very different properties in some respects but are all ionizing radiation–each is energetic enough to break chemical bonds, thereby possessing the ability to damage or destroy living cells.Uranium-238, the most prevalent isotope in uranium ore, has a half-life of about 4.5 billion years; that is, half the atoms in any sample will decay in that amount of time.The third source of radioactive nuclides is termed anthropogenic and results from human activity in the production of nuclear power, nuclear weapons, or through the use of particle accelerators.Marie Curie was the founder of the field of nuclear chemistry.