What is the IUPAC name of this compound?

[tex]\[ \text{CH}_3-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_3 \][/tex]

A. hexane
B. heptane
C. pentane
D. octane
E. butane



Answer :

To determine the IUPAC name of the given compound [tex]\( CH_3-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3 \)[/tex], we need to follow these steps:

1. Identify the Longest Carbon Chain: The first step in naming a hydrocarbon is to identify the longest continuous chain of carbon atoms.
- In this case, we count the number of carbon atoms in the chain: [tex]\( CH_3-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3 \)[/tex]
- This chain has 7 carbon atoms.

2. Determine the Base Name: According to IUPAC nomenclature, the base name of the compound is determined by the number of carbon atoms in the longest chain.
- A chain with 7 carbon atoms is called "heptane".

3. Check for Substituents or Branches: Look for any branches or substituents attached to the main carbon chain.
- In this compound, all carbon atoms are in a continuous, straight chain without any branches or substituents.

Since the longest chain has 7 carbon atoms and there are no additional substituents or branches, the correct IUPAC name for the compound is heptane.

Therefore, the answer is:
- heptane