Why is magnesium a good conductor of electricity ?

Explanation

**Step-by-Step Solution:**

1. **Identify the Nature of Magnesium:**
- Magnesium is classified as a metal. Metals are known for their ability to conduct electricity due to the presence of free-moving electrons.

2. **Understand the Electronic Configuration:**
- The atomic number of magnesium is 12, which gives it the electronic configuration of 1s² 2s² 2p⁶ 3s². This means magnesium has two electrons in its outermost shell (the 3s orbital).

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