Properties of aldehydes, their structure.

The only structural difference between hydrocarbons and aldehydes is the presence of a carbonyl group in aldehydes, and it is this group that is responsible for the differences in properties, both physical and chemical.
In formaldehyde, the simplest aldehyde, the carbonyl group is bonded to two hydrogen atoms. In all other aldehydes, the carbonyl group is bonded to one hydrogen group and one carbon group. In condensed structural formulas, the carbonyl group of an aldehyde is usually represented as —CHO.



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