What are the essential conditions for formation of ammonia by Haber's process/?

Explanation

According to Le - Chateier.s principle, essential conditions for formation of ammonia are as below:
1) Low temperature : The formation of ammonia is an exothermic reaction. Therefore, low temperature favours the formation of ammonia.
ii) High pressure : Since the number of molecules of products are lesser than the number of molecules of reactants. Therefore, high pressure favours the formation of ammonia.
iii) Presence of catalyst : The formation of ammonia takes place in presence of catalyst and promoter, i.e., Fe and Mo.