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Carbon dating or streetdating

Atoms are arranged as a nucleus surrounded by an electron cloud, with electrons zinging around at different distances from the nucleus.Chemists conceive of these distances as shells, and define the properties of atoms by what is in each shell, according to the University of California, Davis.This method works on once-living organisms, including objects made of wood or other plant material.Carbon is a long-studied element, but that doesn't mean there isn't more to discover.

The end result: Atoms with six protons and six neutrons — carbon.In older stars that have burned most of their hydrogen, leftover helium accumulates.Each helium nucleus has two protons and two neutrons.While scientists sometimes conceptualize electrons spinning around an atom's nucleus in a defined shell, they actually fly around the nucleus at various distances; this view of the carbon atom can be seen here in two electron cloud figures (bottom), showing the electrons in a single blob (the so-called s-orbital) and in a two-lobed blob or cloud (the p-orbital). It can link to itself, forming long, resilient chains called polymers.It can also bond with up to four other atoms because of its electron arrangement.Carbon-14 is a radioactive isotope of carbon used by archaeologists to date objects and remains.Carbon-14 is naturally occurring in the atmosphere.However, radioisotope dating may not work so well in the future.Anything that dies after the 1940s, when Nuclear bombs, nuclear reactors and open-air nuclear tests started changing things, will be harder to date precisely.However, the principle of carbon-14 dating applies to other isotopes as well.Potassium-40 is another radioactive element naturally found in your body and has a half-life of 1.3 billion years.

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