# Which radioactive isotope is used in biological dating

A process for determining the age of an object by measuring the amount of a given radioactive material it contains.If one knows how much of this radioactive material was present initially in the object (by determining how much of the material has decayed), and one knows the half-life of the material, one can deduce the age of the object.Radioactive isotopes have unstable ratios of protons to neutrons in their atomic nuclei.An isotope is an element with a varying numbers of neutrons.For organic materials, the comparison is between the current ratio of a radioactive isotope to a stable isotope of the same element and the known ratio of the two isotopes in living organisms.Radiocarbon dating is one such type of radiometric dating.

Because rock sequences are not continuous, but may be broken up by faults or periods of erosion, it is difficult to match up rock beds that are not directly adjacent.This guy which is called tritium is very important in thermal nuclear devices and in fusion studies and he decays in about 12.32 years that's the half life into helium 3 an electron and an antineutreno.Now most of the time, of course if we're going to do this reaction we'll want to put in the bottom numbers and so we've got 3=3 0 plus this guy's got to be 0. So for that reason, I mean it didn't, it doesn't really it doesn't have any charge it doesn't have any mass.There are several different methods for estimating the ages of fossils, including: Paleontologists rely on stratigraphy to date fossils.Stratigraphy is the science of understanding the strata, or layers, that form the sedimentary record.