Uses of radioisotopes carbon dating
There are essentially three sources of radioactive elements.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.In electrolysis, an electric current is passed through a molten (melted) compound.The electrical current breaks the compound into its elements.The alkali metals also include lithium, sodium, rubidium, cesium, and francium. Potassium is so active that it never occurs free in nature.It always occurs in compounds, combined with other elements.
While the common perception is that nuclear chemistry involves only the study of radioactive nuclei, advances in modern mass spectrometry instrumentation has made chemical studies using stable, nonradioactive isotopes increasingly important.
First discovered in the 18th century, uranium is an element found everywhere on Earth, but mainly in trace quantities.