Why can metals conduct electricity?

Explanation

### Step-by-Step Solution:

1. **Understanding Conductivity in Metals**:
Metals have a unique structure that allows them to conduct electricity. The key to this property lies in the presence of free electrons within their atomic structure.

2. **Presence of Free Electrons**:
In metals, some electrons are not bound to any specific atom. These electrons are known as free electrons. They can move freely throughout the metal lattice, which is essential for electrical conductivity.

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