This image of a simple structural formula is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.
{{Information
|Description={{en|1=[[:en:Lewis structure|Lewis structure]] of [[:en:acetaldehyde|acetaldehyde]], ethanal, or CH<sub>3</sub>CHO.}}
{{es|1=[[:es:Estructura de Lewis|Estructura de Lewis]] del [[:es:acetaldehído|acetaldehído]], etanal, o CH<s
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