Here's how to break it down:

* NH₄⁺: This represents the ammonium ion, which is a positively charged polyatomic ion composed of one nitrogen atom and four hydrogen atoms.

* HSO₄⁻: This represents the hydrogen sulfate ion (also known as bisulfate ion), which is a negatively charged polyatomic ion composed of one hydrogen atom, one sulfur atom, and four oxygen atoms.

Since the ammonium ion has a +1 charge and the hydrogen sulfate ion has a -1 charge, they combine in a 1:1 ratio to form a neutral compound.