Question
Write the IUPAC names of the following structural formulae:
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Answer

The number of carbon atoms in the longest chain: 5
Parent alkane: Pentane
Prefix functional group: Chloro
Assign the number: 2
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The carbon atom to which the $-\mathrm{Cl}$ atom is attached is numbered as $\mathrm{C}_2$ and the other $\mathrm{C}$ atoms are numbered accordingly.
Prefix parent: 2-Chloropentane
IUPAC name: 2-Chloropentane

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