Answer:
a. 2 - Methylpropane
b. 2 - Methylbutane
c. 4 - Ethylheptane
d. 3 - Ethyl - 4 - Methylheptane
e. 3 - Ethyl - 3 - Methylheptane
Step-by-step explanation:
a. 2 - Methylpropane - As the structure has 3 carbon atoms and one methyl group at second carbon.
b. 2 - Methylbutane: Numbering for longest carbon chain has 4 carbon atoms and methyl group attached at second carbon atom.
c. 4 - Ethylheptane: Numbering from right to left or left to right, longest chain has 7 carbon atoms (heptane) and two carbon atoms (ethyl) attached at fourth carbon atom.
d. 3 - Ethyl - 4 - Methylheptane: Numbering from right to left, longest chain has 7 carbon atoms (heptane), two carbon atoms (ethyl) attached at forth carbon atom and one methyl group attached at fourth carbon atom.
e. 3 - Ethyl - 5 - Methylheptane: numbering from left to right, longest chain has 7 carbon atoms (heptane), two carbon atoms (ethyl) attached at third carbon atom and one methyl group attached at fifth carbon atom.