Page 2 - 4. HOME ASSIGNMENT-(IONSPOSITIVE&NEGATIVE IONSCALCULATION OF VALENCY OF IONS)
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ii) Aluminium ion

           Q.4       What are anions? Give two examples                                       3       Av/R


           Q.5       a) What are polyatomic ions? Give two examples.                          5       Av/A
                     b) Write two differences between cations and anions.










































































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