The melting point of carbon depends on its allotrope and the environment (pressure, presence of oxygen, etc.):
🔹 1. Diamond (Pure Crystalline Carbon)
Melting Point: Approximately 3550°C (6422°F) at high pressure.
Under normal atmospheric pressure, diamond doesn't melt-it sublimates (transforms directly from solid to gas) around 3550°C.
🔹 2. Graphite
Sublimation Point: Around 3650°C (6600°F).
Like diamond, graphite also sublimates at atmospheric pressure rather than melting.
🔹 Summary:
| Allotrope | Melting/Sublimation Point | Conditions |
|---|---|---|
| Diamond | ~3550°C (sublimes) | Atmospheric pressure |
| Graphite | ~3650°C (sublimes) | Atmospheric pressure |
Note: Carbon doesn't have a conventional "melting point" at normal pressure because it sublimates instead of melting.
