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| Description: Radioactivity and Radiometric Dating Atomic structure reviewed Atomic number An element’s identifying number Number of protons in the atom’s nucleus Mass number Number of protons plus (added to) the number of neutrons in an atom’s nucleus Isotope Variant of the same parent atom Different number of neutrons and mass number Radioactivity Spontaneous breaking apart (decay) of atomic nuclei Radioactive decay Parent – an unstable isotope Daughter products – isotopes formed from the decay of a parent Radioactivity Radioactive decay Types of radioactive decay Alpha emission Beta emission Electron capture Radiometric dating Half-life – the time for one-half of the radioactive nuclei to decay Requires a closed system Cross-checks are used for accuracy Complex procedure Yields numerical dates Picture Stats: Views: 355 Filesize: 651.49kB Height: 921 Width: 610 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39580 |