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GCSE Chemistry Past Paper Question

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Calcium is a metal and chlorine is a non-metal, so they bond ionically. Calcium is in group 2 and chlorine is in group 7, so each calcium atom loses two electrons and each chlorine atom gains one electron for the newly formed ions to have an outer shell that complies with the octet rule.



This is an image I found online. You would not have to draw out the inner two shells, and you would have to draw two chloride ions instead of just one. On the diagram you should be able to see how electrons are transferred such that the ions have eight electrons in the outer shell.

Hope this helps (:

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