Here's how it breaks down:

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

* F⁻: This is the fluoride ion, which is a negatively charged ion consisting of a single fluorine atom.

The positive charge of the ammonium ion (1+) balances the negative charge of the fluoride ion (1-), resulting in a neutral compound.