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: An [[atom]] which gains [[electron]]s becomes a [[Negative Ion|negative ion]].
: An [[atom]] which loses [[electron]]s becomes a [[Positive Ion|positive ion]].
===References===
====Edexcel====
:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Ionisation, page 359, GCSE Combined Science, Pearson Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Ionisation, page 95, GCSE Physics, Pearson Edexcel '']