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This is a list of the longest-living biological organisms: the individual(s) (or in some instances, clones) of a species with the longest natural maximum life spans. For a given species, such a designation may include:
The longest-lived isotope, 247 Cm, has half-life 15.6 million years; so any primordial curium, that is, present on Earth when it formed, should have decayed by now.
1 Μαΐ 2008 · The physical half-life of the longest-lived nuclide 247 Cm, 1.6.10 +07 year is too short compared to the earth's age for any primordial curium to remain in the earth's crust.
This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.
Striving for accuracy, we’ve reviewed studies to bring you the definitive list of top 10 longest living animals on the planet. 10. Galapagos Giant Tortoise. The first animal of this list already has a lifespan that exceeds that of many common-day animals and humans alike!
Greenland sharks live for between 300 and 500 years and are the longest-living vertebrate. They take life very slowly, moving at an average of 0.76 mph. They grow about a cm every year, and females may not reach sexual maturity until they are 100 to 150 years old – that’s one long childhood!
14 Δεκ 2018 · 247 Cm has the longest half-life of any known isotope beyond 244 Pu — but 247 Cm has undergone about 290 half-lives since the formation of the Earth; any primordial curium is now gone (the...
