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Posted by / 25-Nov-2017 20:57

The halogens are a group of elements on the periodic table.

It is the only element group that includes elements capable of existing in three of the four main states of matter at room temperature (solids, liquid, gas).

In order to date the artifact, the amount of Carbon-14 is compared to the amount of Carbon-12 (the stable form of carbon) to determine how much radiocarbon has decayed.

The ratio of carbon-12 to carbon-14 is the same in all living things.

The word Many, however, are common in combination with other elements Here is a look at the identity of these elements, their location on the periodic table, and their common properties.

The halogens are located in Group VIIA of the periodic table or group 17 using IUPAC nomenclature.

To measure the amount of radiocarbon left in a artifact, scientists burn a small piece to convert it into carbon dioxide gas.

Cosmic rays enter the earth's atmosphere in large numbers every day and when one collides with an atom in the atmosphere, it can create a secondary cosmic ray in the form of an energetic neutron.

The ratio of normal carbon (carbon-12) to carbon-14 in the air and in all living things at any given time is nearly constant.

Maybe one in a trillion carbon atoms are carbon-14.

When these energetic neutrons collide with a nitrogen-14 (seven protons, seven neutrons) atom it turns into a carbon-14 atom (six protons, eight neutrons) and a hydrogen atom (one proton, zero neutrons).

Since Nitrogen gas makes up about 78 percent of the Earth's air, by volume, a considerable amount of Carbon-14 is produced.

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By measuring the ratio of carbon-12 to carbon-14 in the sample and comparing it to the ratio in a living organism, it is possible to determine the age of the artifact.

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