Give the necessary chemical equations and balance them.
Burning magnesium ribbon in an atomsphere of nitrogen.

Explanation

To write and balance the chemical equation for burning magnesium ribbon in an atmosphere of nitrogen, follow these steps:

### Step 1: Write the unbalanced equation
When magnesium (Mg) burns in nitrogen (N₂), it forms magnesium nitride (Mg₃N₂). The unbalanced equation can be written as:
\[ \text{Mg} + \text{N}_2 \rightarrow \text{Mg}_3\text{N}_2 \]

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