甲乙丙 烷，其中丙烷最重要，天然气的成分。
1.Methane
Methane is a chemical compound with the chemical formula CH₄. It is a group-14 hydride and the simplest alkane, and is the main constituent of natural gas.
Formula:CH4
2. Ethane is an organic chemical compound with chemical formula C₂H₆. At standard temperature and pressure, ethane is a colorless, odorless gas.
Formula:C2H6
3. Propane
Propane is a three-carbon alkane with the molecular formula C₃H₈, a gas, at standard temperature and pressure, but compressible to a transportable liquid.
Formula:C3H8
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