Scientific definition of carbon dating

actinide series,a series of radioactive metallic elements in Group 3 of the periodic table.

Members of the series are often called actinides, although actinium (at. 89) is not always considered a member of the series......

The product of a radioactive decay may itself be unstable and undergo further decays, by either alpha or beta emission.Ordinary electric current is the flow of electrons through a wire conductor (see electricity).The electron is one of the basic constituents of matter......Other, less common, types of radioactivity are electron capture (capture of one of the orbiting atomic electrons by the unstable nucleus) and positron emission—both forms of beta decay and both resulting in the change of a proton to a neutron within the nucleus—an internal conversion, in which an excited nucleus transfers energy directly to one of the atom's orbiting electrons and ejects it from the atom.Alpha rays have the least penetrating power, move at a slower velocity than the other types, and are deflected slightly by a magnetic field in a direction that indicates a positive charge.

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