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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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 · Answer 1 · 2015-06-02T03:14:03+02:00

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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