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Multiple Choice
What is the correct IUPAC name for the compound with the structure ?
A
Hexane
B
Pentane
C
Propane
D
Butane
Verified step by step guidance
1
Identify the number of carbon atoms in the longest continuous chain of the compound. Count each carbon atom in the chain to determine the base name.
Recall the IUPAC alkane naming system where the base name depends on the number of carbons: 1 carbon is methane, 2 is ethane, 3 is propane, 4 is butane, 5 is pentane, and 6 is hexane.
Count the carbons in the given structure: CH\_3-CH\_2-CH\_2-CH\_2-CH\_3. There are 5 carbon atoms in a straight chain.
Since the chain has 5 carbons, the correct base name according to IUPAC rules is 'pentane'.
Confirm that there are no branches or substituents that would change the base name or require additional prefixes; since the structure is a straight chain alkane, the name remains 'pentane'.