Ion - MSN Encarta

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Nutrition Courses, Nutritional Therapy Education Advice Information ...
The Nutritional Therapy Diploma Course qualifies graduates to practise as a nutritional therapist, with the award of an ION Diploma and Science Foundation Degree - upgradeable ...
Contact Details - ION Institute for Optimum Nutrition
The Institute for Optimum Nutrition offers nutrition course on nutrition and healthy living, an information packed magazine on optimum nutrition and healthy living , and a ...
Ion - Wikipedia, the free encyclopedia
An ion is an atom or molecule which has lost or gained one or more valence electrons, giving it a positive or negative electrical charge. A negatively charged ion, which has more ...

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Ion, particle formed when a neutral atom or group of atoms gains or loses one or more electrons. An atom that loses an electron forms a positively charged ion, called a cation; an atom that gains an electron forms a negatively charged ion, called an anion. Atoms can be converted to ions by radiation such as X-rays or light of sufficient energy. This kind of radiation is thus called ionizing radiation. See Ionization.