Ammonia molecule has one lone pair of electrons. It combines with hydroxyl ions of water to form ammonium ions through a coordinate bond.
Ammonia molecule has one lone pair of electrons. It reacts with hydroxyl ions of water to form ammonium ions by a covalent bond.
Ammonia molecule has one lone pair of electrons. It combines with H+ ions of water (not hydroxyl ions) to form ammonium ions through a coordinate bond.
NH3+H+→NH+4