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  • 02-06-2015
  • Chemistry
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Explain, in terms of electrons, why the radius of a calcium ion is smaller than the radius of a calcium atom.

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lulu1991
lulu1991 lulu1991
  • 02-06-2015
Because the calcium ion donates two electrons to achieve the stable state. So the layer of electrons decrease form 4 layers(2,8,8,2) to 3 layers(2,8,8). Thus, the radius of a calcium ion is smaller than a calcium atom.
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