Name the element
A monovalent non-metal present in fluorspar.

Explanation

To solve the question, we need to identify the monovalent non-metal present in fluorspar. Here’s a step-by-step solution:

### Step 1: Understand the Composition of Fluorspar
Fluorspar is a mineral that consists primarily of calcium fluoride. The chemical formula for calcium fluoride is CaF₂.

**Hint:** Look for the chemical formula of the mineral mentioned in the question.

### Step 2: Identify the Elements in Calcium Fluoride
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