Answer question in one word or one sentence.
What is the number of valence electrons on F atom?

Explanation

**Step-by-Step Solution:**

1. **Identify the Atomic Number of Fluorine:**
- The atomic number of fluorine (F) is 9.

2. **Determine the Electronic Configuration:**
- The electronic configuration of fluorine can be written as 1s² 2s² 2p⁵.

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