Here's how to figure out the number of hydrogen atoms in ammonium sulfide:

* Ammonium sulfide's formula: (NH₄)₂S

* Breakdown:

* (NH₄)₂: This represents two ammonium ions (NH₄⁺).

* S: This represents one sulfide ion (S²⁻).

* Hydrogen atoms: Each ammonium ion (NH₄⁺) has four hydrogen atoms.

* Total hydrogen atoms: Since there are two ammonium ions, the total number of hydrogen atoms is 2 * 4 = 8.

Therefore, there are 8 hydrogen atoms in the formula for ammonium sulfide.