This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days...

list of nuclides shows observed nuclides that either are stable or, if radioactive, have half-lives longer than one hour. This represents isotopes of...

the outbreak can be modeled exponentially. Half time (physics) List of radioactive nuclides by half-life Mean lifetime Median lethal dose John Ayto,...

nuclides.[citation needed] Island of stability Isotope § Nuclear properties and stability List of nuclides List of radioactive nuclides by half-life Primordial...

Stable nuclides are nuclides that are not radioactive and so (unlike radionuclides) do not spontaneously undergo radioactive decay. When such nuclides are...

table of nuclides maps the nuclear, or radioactive, behavior of nuclides, as it distinguishes the isotopes of an element. It contrasts with a periodic...

primordial nuclides. The third group consists of nuclides that are continuously being made in another fashion that is not simple spontaneous radioactive decay...

years), and another four nuclides with half-lives long enough (> 100 million years) that they are radioactive primordial nuclides, and may be detected on...

geochemistry, geophysics and nuclear physics, primordial nuclides, also known as primordial isotopes, are nuclides found on Earth that have existed in their current...

daughters of those radioactive primordial nuclides. Another minor source of naturally occurring radioactive nuclides are cosmogenic nuclides, that are...