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Multiple Choice
What is the correct IUPAC name for the compound with the structure ?
A
Pentane
B
Butane
C
Propane
D
Hexane
Verified step by step guidance
1
Identify the longest continuous carbon chain in the given structure. The structure shows a straight chain of 5 carbon atoms connected sequentially.
Count the number of carbon atoms in this longest chain. Here, the chain has 5 carbon atoms.
Recall the IUPAC naming convention for alkanes, where the prefix indicates the number of carbons: 1 carbon is methane, 2 is ethane, 3 is propane, 4 is butane, 5 is pentane, and 6 is hexane.
Since the chain has 5 carbons and contains only single bonds (alkane), the correct name is the prefix for 5 carbons plus the suffix '-ane', which gives 'pentane'.
Verify that there are no branches or substituents that would change the name; since the structure is a straight chain with no branches, the correct IUPAC name is 'pentane'.