Non-metals form ________

Explanation

**Step-by-Step Solution:**

1. **Understanding Non-Metals:**
Non-metals are elements that typically lack the characteristics of metals. They are found on the right side of the periodic table and include elements like fluorine, oxygen, nitrogen, and carbon.

2. **Valence Electrons:**
Non-metals usually have a higher number of valence electrons (the electrons in the outermost shell) compared to metals. For example, fluorine has 7 valence electrons.

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