Hint for Writing the Formula for Ammonium hydroxide It's considered ionic since it's made up of NH4+ and OH- ions.
You could argue that it is molecular since it's made up of all non-metals. However, since you have two ions it's best to think of it as ionic.
To write the formula this one look up both ions on the Common Ion Table and write the formulas for each. Be sure the the ion charges cancel out to give you a neutral molecule.
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