Uranium 238 dating process

For example, if there were \(100 \: \text\) of \(\ce\)-251 in a sample at some time, after 800 years, there would be \(50 \: \text\) of \(\ce\)-251 remaining and after another 800 years (1600 years total), there would only be \(25 \: \text\) remaining.

The quantity of radioactive nuclei at any given time will decrease to half as much in one half-life.The only thing we know is that in the time of that substance's half-life, half of the original nuclei will disintegrate.Although chemical changes were sped up or slowed down by changing factors such as temperature, concentration, etc, these factors have no effect on half-life.Substances must have obtained C-14 from the atmosphere.For this reason, aquatic samples cannot be effectively C-14 dated.

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