Use the periodic table to predict how Ca would gain or lose electrons during ion formation.

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Use the periodic table to predict how Ca would gain or lose electrons during ion formation.

[From: ] [author: ] [Date: 12-10-07] [Hit: ]

It will not take up a configuration of one unpaired electron in its outer shell, so will not have a +1 charge.......

a. Ca + 2e- ? Ca2+

b. Ca ? Ca+ + 1e-

c. Ca + 2e- ? Ca2-

d. Ca ? Ca2+ + 2e-

e. Ca ? Ca2- + 2e-

Can you explain the answer too? :)

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Calcium is in the column II, and an alkaline earth metal. It has an outer shell of 4s2, meaning as the cation, it will readily give up 2 electrons. Apparently, your (d).

So it will become a cation, +2 charge. It will not take up a configuration of one unpaired electron in its outer shell, so will not have a +1 charge.

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