Why are metals good conductors of electricity whereas glass is a bad conductor of electricity? Give reason.

Explanation

### Step-by-Step Solution:

1. **Understanding Conductivity**: To understand why metals are good conductors of electricity while glass is not, we need to first understand what electrical conductivity means. Conductivity refers to the ability of a material to allow the flow of electric current.

2. **Structure of Metals**: Metals have a unique atomic structure characterized by metallic bonding. In this structure, atoms are closely packed, and there are free electrons (also known as conduction electrons) that can move freely throughout the metal lattice.

3. **Presence of Free Electrons**: The presence of these free electrons is crucial for electrical conductivity. When an electric field is applied, these free electrons can move easily in response to the field, allowing electric current to flow through the metal.

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