Start Radioactive isotope used for radiometric dating

Radioactive isotope used for radiometric dating

In this lesson, we are going to focus on the half-life, a way of measuring the probability that a particle will react.

This continues for the rest of the movie until all of your popcorn is gone.

If we were to graph your popcorn eating during the movie, it may look something like this. First, your popcorn eating did not happen at a steady pace.

Then, if I wait 5.27 more years, half of the eight cobalt-60 atoms that were left should decay, giving me only four cobalt-60 atoms and a total of 12 nickel-60 atoms.

If I wait 5.27 years after that, half of the cobalt that remained will decay into nickel-60, giving me 14 atoms of nickel-60 and only two atoms of cobalt-60.

The half-life of a radioactive isotope is the time it takes for half of the sample to react, or decay.

This time can range anywhere from a portion of a second to thousands of years depending on the identity of the starting isotope.

If I wait another 5.27 years, half of those two remaining atoms, so one atom, should decay, giving me a total of 15 nickel-60 atoms and one lonely little cobalt-60 atom.