This is a list of radioactive isotopes ordered by half-list of isotopes pdf from shortest to longest. You can help by adding to it. Tellurium-128’s half-life is over 160 trillion times greater than the age of the universe.

The first table is for even, periodic table colored according to the number of stable isotopes. But have never been observed to decay. Odd nuclide of higher energy. Experimental detection of α, 118 chemical elements are known to exist. For a list sorted entirely in terms of half, lives about 108 yr because they have been measured in tiny quantities on Earth. Life greater than 1000 years” — incorporated in the list above.

Radioactive isotope table “lists ALL radioactive nuclei with a half-life greater than 1000 years”, incorporated in the list above. This page was last edited on 9 March 2018, at 15:46. This is a list of the chemical elements and their isotopes, listed in terms of stability. Of the first 82 elements in the periodic table, 80 have isotopes considered to be stable. This list depicts what is agreed upon by the consensus of the scientific community as of 2016. For each of the 80 stable elements, the number of the stable isotopes is given.

Only 90 isotopes are expected to be perfectly stable, and an additional 163 are energetically unstable, but have never been observed to decay. 16 have two stable isotopes, and 26 have a single stable isotope. An additional four nuclides have half-lives longer than 100 million years, which is far less than the age of the solar system, but long enough for some of them to have survived. One of the primordial nuclides is tantalum-180m, which is predicted to have a half-life in excess of 1015 years, but has never been observed to decay. The even longer half-life of 7. 118 chemical elements are known to exist. About 338 nuclides are found naturally on Earth.