Why does graphite conduct electricity but diamond does not?
Quick Answer
Graphite has electrons that can move between layers, while diamond’s electrons are locked into strong bonds. That difference makes graphite conductive and diamond an insulator.
The Full Story
Both materials are pure carbon, but their atomic structures are very different. In graphite, each carbon atom bonds to three others in flat hexagonal sheets, leaving one electron more delocalized and free to move. In diamond, each carbon bonds to four others in a rigid 3D network, so there are no mobile electrons available to carry current. The contrast shows how dramatically structure can change a material’s properties.
Key Facts
YouTube Angle
Suggested video title for this topic:
"Two forms of carbon, two completely different electrical personalities."
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