Final answer:
The four smallest alkanes are methane, ethane, propane, and butane. Their structural formulas are CH4, CH3CH3, CH3CH2CH3, and CH3CH2CH2CH3 respectively.
Step-by-step explanation:
The four smallest alkanes are:
- Methane: CH4
- Ethane: C2H6
- Propane: C3H8
- Butane: C4H10
Here are the structural formulas for the four smallest alkanes:
- Methane: CH4
- Ethane: CH3CH3
- Propane: CH3CH2CH3
- Butane: CH3CH2CH2CH3