The first thing is that your question is flawed. Ammonia is NH3, not NH4. NH4 is ammonium, which takes on an extra Hydrogen atom. That said, the Ammonium atom can certainly be written as H4N as well as the ore common NH4.
No, Ammonia is NH3. NH4 is Ammonium.
arterial
Nh4
Ammonia = NH3 Ammonium = NH4
NH4+
Ammonia a base, but it is not a radical; ammonium (NH4+) is a radical.
NH3
Ammonia a base, but it is not a radical; ammonium (NH4+) is a radical.
Ammonia is a weak base: NH3 + H2O <==> NH4+ + OH-
1. Ammonia (NH3) is a neutral molecule. 2. Ammonium (NH4+) is a cation (a positive charged ion).
(nh4)2co3
Ammonia is NH3 whereas ammonium ion is NH4+