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Multiple Choice
What is the correct IUPAC name for the compound with the structure ?
A
Propane
B
Pentane
C
Butane
D
Hexane
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 nomenclature for alkanes, where the base name depends on the number of carbon atoms: methane (1), ethane (2), propane (3), butane (4), pentane (5), hexane (6), etc.
Since the compound is given as CH\_3-CH\_2-CH\_2-CH\_2-CH\_3, count the carbons: there are 5 carbon atoms in a straight chain.
Match the number of carbons (5) to the corresponding alkane name, which is 'pentane' according to IUPAC rules.
Confirm that there are no branches or functional groups that would modify the base name; since it is a straight-chain alkane, the correct IUPAC name is simply 'pentane'.