IB Chemistry 2.2.11 (HL) Resonance structures Questions
IB Chemistry 2.2.11 (HL) Resonance structures Questions
Use resonance to predict equal bond lengths, explain delocalized pi electrons and sketch valid Lewis structures when IB asks for octet and expanded-octet forms.
How this is tested
- use resonance to explain equal N-O bond lengths in NO3- of about 124 pm
- a circle in a structure shows delocalized pi electrons, not a localized single bond
- sketch two valid SO3 Lewis structures: one octet-rule form and one expanded-octet form