Amarjeet K. answered 02/25/14
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Calcium has a valency of 2
So calcium ion would be Ca++ and have a positive charge of 2 x charge of an electron = 2 x 1.6 x 10-19Coloumb.
Each chlorine ion would be Cl- with a negative charge of one electron = 1.6 x 10-19C.
:)