When a Mg ribbon is burnt in air, Mg is oxidised or Reduced?

Explanation

To determine whether magnesium (Mg) is oxidized or reduced when it is burnt in air, we can follow these steps:

### Step 1: Write the Reaction
When magnesium burns in air, it reacts with oxygen (O₂) to form magnesium oxide (MgO). The balanced chemical equation for this reaction is:
\[ 2 \text{Mg} + \text{O}_2 \rightarrow 2 \text{MgO} \]

...