Mention the type of chemical reaction that takes place when :
a magnesium ribbon is burnt in air
Write the chemical equation for this reaction.

Explanation

**Step-by-Step Solution:**

1. **Identify the Reaction Type:**
- When magnesium ribbon is burnt in air, it reacts with oxygen. This is classified as a **Combination Reaction** because two reactants (magnesium and oxygen) combine to form a single product (magnesium oxide).

2. **Write the Chemical Equation:**
- The chemical symbol for magnesium is **Mg** and for oxygen is **O**. When magnesium burns in the presence of oxygen, it forms magnesium oxide, which is represented as **MgO**.
- The unbalanced equation can be written as:
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