Why is ammonia a good complexing agent?

Why ammonia is a good complexing agent?

(i) why are halogens strong oxidising agents ? (ii) Why oxygen shows anomalous behaviour from rest of members of its family ? (iii) Ammonia acts as a good complexing agent. Explain.

Give one reaction in which ammonia acts as a reducing agent .

Why does ammonia act as a lewis base?

Give reason for the following : Mn^(3+) is a good oxidising agent.

TiCl_3 acts as a good reducing agent. Why ?

Why is banana considered a good example of parthenocarpy?