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A carbon dating

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Before we get into the details of how radiometric dating methods are used, we need to review some preliminary concepts from chemistry.Recall that atoms are the basic building blocks of matter.Professor Willard Libby produced the first radiocarbon dates in 1949 and was later awarded the Nobel Prize for his efforts.Radiocarbon dating works by comparing the three different isotopes of carbon.

a carbon dating-28a carbon dating-13a carbon dating-61

For example, in 1991, two hikers discovered a mummified man, preserved for centuries in the ice on an alpine mountain.

Carbon-13 and carbon-14 are thus isotopes of carbon-12.

Isotopes participate in the same chemical reactions but often at differing rates.

Isotopes of a particular element have the same number of protons in their nucleus, but different numbers of neutrons.

This means that although they are very similar chemically, they have different masses.