Answer:
Figure 1
Name : Methane
Molecular formula: CH4
structural formula:
H
l
H - C - H
Figure 2
Name: Ethane
molecular formula: C2H6
H H
l l
H - C - C - H
Figure 3
Name: Propane
Molecular formula: C3H8
H H H
l l l
H - C - C - C - H
