Radioactive dating facts
Examples of Radioactive isotopes and their uses What are Radioactive elements Some of the elements in the periodic table can spontaneously emit radioactive radiations like alpha ray, gamma ray and beta ray.
Such elements are the radioactive elements. Generally, heavier nucleus having atomic mass number greater than like Uranium, Thorium, Polonium, etc.
But there are some radioactive isotopes of lighter elements too. Among the lighter elements hydrogen, carbon, oxygen, nitrogen, phosphorus, iodine, etc. Radioactivity of Isotopes of radioactive elements Earlier I told that all the isotopes of lighter elements are not radioactive.
But there may be some isotopes that shows radioactive property. For example, among the isotopes of carbon, only C shows radioactivity, among the radioactive dating facts of hydrogen, only Tritium is radioactive. Again, multiple isotopes of an element can also be radioactive, but they will have different percentage of radioactive property.
We have discussed radioactivity of elements one by one as below. Radioactive isotopes of Hydrogen Hydrogen atom has seven isotopes from 1H1 to 7H1. Among these isotopes only three isotopes are occurred naturally and rest are artificial isotopes having very small life-times.
Among these three natural isotopes Tritium is radioactive isotope that occurs naturally due to the interaction of cosmic rays with atmospheric gases. So, the radioactive isotope of hydrogen is Tritium.
Tritium emits beta- rays and gets converted into Helium atom. Again, all the artificial isotopes of hydrogen are radioactive. All of these artificial isotopes decay to Tritium and then Tritium decays into Helium atom.
Isotope of Carbon.]
Radioactive dating facts - with youRadioactive decay[ edit ] Example of a radioactive decay chain from lead Pb to lead Pb. The final decay product, lead Pb , is stable and can no longer undergo spontaneous radioactive decay. All ordinary matter is made up of combinations of chemical elements , each with its own atomic number , indicating the number of protons in the atomic nucleus. Additionally, elements may exist in different isotopes , with each isotope of an element differing in the number of neutrons in the nucleus. A particular isotope of a particular element is called a nuclide. Some nuclides are inherently unstable. That is, at some point in time, an atom of such a nuclide will undergo radioactive decay and spontaneously transform into a different nuclide. This transformation may be accomplished in a number of different ways, including alpha decay emission of alpha particles and beta decay electron emission, positron emission, or electron capture.
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