How do metallic and ionic substances differ in conducting electricity ?

Explanation

To understand how metallic and ionic substances differ in conducting electricity, we can break down the explanation into several key points:

### Step-by-Step Solution:

1. **Definition of Conductivity**:
- Conductivity refers to the ability of a substance to allow the flow of electric current through it. This flow of current is typically due to the movement of charged particles.

2. **Conductivity in Metallic Substances**:
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