Which of the following is true of the IUPAC nomenclature of aldehydes?
A) The parent name is based on the longest carbon chain that contains the carbonyl carbon.
B) The oxygen atom is always bonded to the first carbon.
C) The parent name is based on the longest carbon chain that contains the carbonyl carbon and the oxygen atom is always bonded to the first carbon.
D) None of these

Question

Quizplus · Accepted Answer

The IUPAC nomenclature of aldehydes requires the parent name to be based on the longest carbon chain that contains the carbonyl carbon. The suffix "-al" is added to the name of the parent chain to indicate that it is an aldehyde. The carbon atom in the carbonyl group (C=O) is always numbered as 1, and the oxygen atom is bonded to the first carbon. Therefore, option C, which states that the parent name is based on the longest carbon chain that contains the carbonyl carbon, and the oxygen atom is always bonded to the first carbon, is correct.

Which of the Following Is True of the IUPAC Nomenclature