OCR A Level Chemistry, shapes of molecules tutorial.
http://odogard.com/?sccss=1 I’ve written a little tutorial on shapes of molecules for OCR. I have published it onto you tube.
enter The video goes through the drawing of the shapes table, and then show one example. Once you have learnt the table you need to draw out your dot and cross diagram for the molecule. You can then count the number of bonding pairs and lone pairs to give you the shape name and bond angle.