A highly conductive material must have?

1. A high density of free electrons: Conductivity in materials is primarily due to the movement of free electrons, so a highly conductive material must have a high density of free electrons available for conduction.

2. Low resistance: Resistance is the opposition to the flow of electric current in a material. A highly conductive material must have low resistance to allow for efficient flow of electrons.

3. High mobility of charge carriers: The ability of charge carriers (such as electrons) to move freely and quickly through a material is essential for high conductivity.

4. Good crystalline structure: A well-ordered crystalline structure allows for the efficient movement of electrons through the material, leading to high conductivity.

5. High purity: Impurities and defects in a material can hinder the movement of electrons and reduce conductivity. A highly conductive material must have high purity to minimize these obstacles.

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