Chemistry Exam Practice Worksheet Page 7

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Describe in detail what happens when sodium atoms react with
chlorine atoms to produce sodium chloride. (3 marks)
The sodium atom loses 1 electron from its outer shell and forms a 1+
ion.(1)
The chlorine atom gains the 1 electron onto its outer shell and forms a 1-
ion.(1)
The oppositely charged sodium and chloride ions attract and form an ionic
bond.(1)

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