You're asking about the number of potassium (K) and oxygen (O) atoms in a binary compound. Here's how we can figure that out:

* Binary Compounds: These compounds are formed from two different elements.

* Potassium and Oxygen: When potassium and oxygen react, they form a binary compound called potassium oxide.

The Formula: The chemical formula for potassium oxide is K₂O.

The Breakdown: This formula tells us:

* 2 Potassium atoms (K₂)

* 1 Oxygen atom (O)

In summary, a binary compound of potassium and oxygen, potassium oxide (K₂O), contains 2 potassium atoms and 1 oxygen atom.