The prefix valer- is used for generally used for naming aldehydes with how many carbon atoms in the structure?(a) 3(b) 4(c) 5(d) 6The question was posed to me by my college professor while I was bunking the class.I would like to ask this question from Nomenclature and Structure of Carbonyl Groups topic in chapter Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

The prefix valer- is used for generally used for naming aldehydes with

1.	The prefix valer- is used for generally used for naming aldehydes with how many carbon atoms in the structure?(a) 3(b) 4(c) 5(d) 6The question was posed to me by my college professor while I was bunking the class.I would like to ask this question from Nomenclature and Structure of Carbonyl Groups topic in chapter Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12
Answer» RIGHT answer is (c) 5 To explain I would SAY: When aldehydes have exactly 5 carbon atoms in their structure, INCLUDING the carbonyl group and any substituted groups, the aldehyde is given the PREFIX valer- in the common naming system. For example, pentanal is named as n-Valeraldehyde.

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