Question

1. State the difference between a covalent bond and a dative covalent bond.
2. Using dots (•) and crosses (X) to represent electrons, draw a diagram to show the bonding in ammonia.  (1 mark)
3. Using the diagram in (2), state one property that makes ammonia react with hydrogen ion.  

Answer 1

1. In covalent shared electrons are contributed by both species/atoms while in dative, the shared electrons are from on of the atoms or species.
2. 
   
3. Nitrogen in Ammonia contain a lone pair of electrons.
   OR   Presence of lone pair of electrons/ unshared pair of e^-