What is the expected product when l-propanol is oxidized? a. propanoic acid b. propanone c. propanal d. propene

Answer is: C. propanal.
1-propanol is primary alcohol. With weak oxidizing agent primary alcohol gives aldehyde and with strong oxidizing agent primary alcohol gives carbonic acid.
Oxidation of 1-propanol with Na₂Cr₂O₇ and sulfuric acid gives propanal and oxidation with chromic acid gives propionic acid.

Atomicity occurs to prevent updates of the database occurring only partially, which can cause greater problems than rejecting the whole series outright.some are monatomic, diatomic, triatomic etc because it shows the number of atoms. for example, monatomic means it contains only one atom.