The Student Room Group

chemistry molecular shape SF4

For the geometry angle of a see-saw molecular shape for example SF4 (4 bonding pairs and 1 lone pair) why is the angle 102 degrees if it is just 1 lone pair. I thought you would do 120-2.5 degrees as there is only one lone pair ? I can't find an answer online help please.
(edited 1 year ago)
Original post by Thumb611
For the geometry angle of a see-saw molecular shape for example SF4 (4 bonding pairs and 1 lone pair) why is the angle 102 degrees if it is just 1 lone pair. I thought you would do 120-2.5 degrees as there is only one lone pair ? I can't find an answer online help please.

You can’t work out the bond angles for the seesaw shape based on lone pairs and bond pairs. You just have to memorise it for a level standard. You won’t be asked to explain it :smile:
Reply 2
Original post by 513N4_:D
You can’t work out the bond angles for the seesaw shape based on lone pairs and bond pairs. You just have to memorise it for a level standard. You won’t be asked to explain it :smile:


ok great thank you:smile:

Quick Reply