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in Chemistry Form 2 by
  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.  

1 Answer

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  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. Nitrogen in Ammonia contain a lone pair of electrons.
    OR   Presence of lone pair of electrons/ unshared pair of e-
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