IB Chemistry 2.2.1 Covalent bonding Questions
IB Chemistry 2.2.1 Covalent bonding Questions
Practise the Lewis formulae IB repeatedly asks for, so you place bonds, lone pairs and charges correctly in molecules and ions first time.
How this is tested
- draw Lewis structures for HCN or C2H2 with the correct multiple bond and lone pairs
- deduce the Lewis structure of NO3- and place formal charges in the correct positions
- build Lewis structures for PCl3 or SO2 from valence electrons without using resonance