Edit 
Delete - Last Modified By: FBA at 26/05/2016 10:07:11 AM
Modelling ionic compounds
Ionic compounds are composed of cations and anions coming together - as negative and positive charges attract.
Model 1 - Na and Cl
On the paper provided, draw two nuclei and surrounding shells. On one, arrange electrons as they would be in Na, the other, Cl.
How could electrons be donated and accepted so that each element has a full outer shell?
What ions are formed? Write these using symbol notation.
Draw an electron transfer diagram for your records.
Model 2 - AlCl3
On the paper provided, draw FOUR nuclei and surrounding shells. On one, arrange electrons as they would be in Al, the other 3, Cl.
How could electrons be donated and accepted so that each element has a full outer shell?
What ions are formed? Write these using symbol notation.
Draw an electron transfer diagram for your records.
Model 3 - CaO
On the paper provided, draw two nuclei and surrounding shells. On one, arrange electrons as they would be in Ca, the other, O.
How could electrons be donated and accepted so that each element has a full outer shell?
What ions are formed? Write these using symbol notation.
Draw an electron transfer diagram for your records.
Try to find the compound made of the following elements these if time permits:
Fe and O
Ca and I
Na and O