question_answer

  Give reasons for the following facts : (a) Ammonia is a good complexing agent.                                                                                                             1 (b) HgP04 is a diprotic acid.                                                                                                                                                          1 (c) is ionic in solid state.                                                                                                                                                      1

Answer:

  (a) Nitrogen atom in has lone pair of electron which it can donate by means of co-ordinate bond and acts as a good complexing agent.                                                                                                                                               1 (b) molecule contain two group which can ionize to form two ions. The third H-atom is directly attached to p-atom and is not ionisable.                                                 (c) In solid state exists as hence it is ionic in nature. Due to ionic nature it conducts current on fusion.                                                                                                                                                                            1