Here's how to break down the number of atoms in (NH₄)Br:

* Parentheses: The parentheses indicate that the subscript applies to everything inside them. So, there are 4 hydrogen atoms (H) and 1 nitrogen atom (N) within the ammonium ion (NH₄).

* Total Atoms:

* 1 Nitrogen (N)

* 4 Hydrogen (H)

* 1 Bromine (Br)

* Grand Total: (NH₄)Br has a total of 6 atoms.