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Radioactivity basically is the property of some atoms to spontaneously give off energy as particles or rays. The atoms that make up the radioactive materials are the source of radiation.
Radioactivity of atoms depends on some basis. The balance of the forces in the nucleus of an atom determines whether a nucleus is stable or unstable. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. Instability of an atom's nucleus may result from an excess of either neutrons or protons. A radioactive atom will attempt to reach stability by giving off nucleons (protons or neutrons), as well as other particles, or by releasing energy in other forms.
These unstable atoms become stable as they go through radioactive decays.
Radioactivity basically is the property of some atoms to spontaneously give off energy as particles or rays. The atoms that make up the radioactive materials are the source of radiation.
Radioactivity of atoms depends on some basis. The balance of the forces in the nucleus of an atom determines whether a nucleus is stable or unstable. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. Instability of an atom's nucleus may result from an excess of either neutrons or protons. A radioactive atom will attempt to reach stability by giving off nucleons (protons or neutrons), as well as other particles, or by releasing energy in other forms.
These unstable atoms become stable as they go through radioactive decays.