An ammonium ion has the formula NH4+\text{NH}_4^+NH4+.
A hydroxide ion has the formula OH−\text{OH}^-OH−.
Which of the following is the correct formula for ammonium hydroxide?
NH4OH\text{NH}_4\text{OH}NH4OH
(NH4)2OH(\text{NH}_4)_2\text{OH}(NH4)2OH
NH4(OH)2\text{NH}_4(\text{OH})_2NH4(OH)2
(NH4OH)2(\text{NH}_4\text{OH})_2(NH4OH)2