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What radioactive decay is used in carbon dating

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This chain eventually ends with the formation of a stable, nonradioactive daughter nuclide.

Now, with seven protons instead of six, it's turned into nitrogen. And scientists know exactly how long it will take for half of any amount of carbon-14 to decay away.

Scientists now know that most elements come in more than one version. When the dry periods ended and the water level rose, the trees drowned, marking the end of the droughts.

Since then, the remains of those trees have been well preserved by the arid climate. To determine how long ago these droughts occurred, Scott is using carbon-14 to date the trees.

After one half-life has elapsed, one half of the atoms of the nuclide in question will have decayed into a "daughter" nuclide, or decay product.

In many cases, the daughter nuclide is radioactive, resulting in a decay chain.