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Chapter 8 of Chemistry live

Radioactivity the spontaneous breaking up of unstable nuclei with the emission of radiation
what happens when an atom loses an alpha particle It changes into the atom 2 places before it in the periodic table and its mass number is reduced by 4.
what happens when an atom loses a beta particle it changes into an atom 1 place after it in the periodic table, & the mass number stays the same
Half-life the time taken for half the nuclei of an element to decay
Example of Alpha Americium 241
Example of Beta Carbon 14
Example of Gamma Cobalt 60
Created by: MarkA0845