A potassium ion has positive charge because it contains less ___________ than _________

Explanation

To answer the question: "A potassium ion has a positive charge because it contains less ___________ than _________", we need to analyze the atomic structure of potassium and its ion.

**Step 1: Understand the atomic structure of potassium.**
- Potassium (K) has an atomic number of 19. This means it has 19 protons in its nucleus.

**Hint:** Remember that the atomic number indicates the number of protons in an atom.

**Step 2: Determine the number of electrons in a neutral potassium atom.**
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