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02177_Field_ion.txt
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1995-11-04
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412b
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12 lines
ion: An atom that has lost or gained
one or more electrons and has
become electrically charged as a
result. Atoms usually have an equal
number of protons (positively
charged) and electrons (negatively
charged). These charges cancel, giving
the atom no overall electrical charge.
High-energy radiation or extreme
heat can cause atoms to lose or gain
electrons giving them an overall
electrical charge.