* Identify the elements: Cadmium nitrate contains cadmium (Cd), nitrogen (N), and oxygen (O).
* Count the atoms of each element:
* Cadmium (Cd): 1 atom
* Nitrogen (N): 2 atoms (because of the subscript 2 outside the parentheses)
* Oxygen (O): 6 atoms (2 from the subscript outside the parentheses, multiplied by 3 from the subscript within the parentheses)
Total: 1 + 2 + 6 = 9 atoms
Therefore, there are 9 atoms in one formula unit of cadmium nitrate.
