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Aldehydes and Ketones Alpha Hydrogen in Aldehydes

1

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Arrange the following aldehydes in increasing order of the number of α-hydrogen atoms: (1) Methanal (2) Ethanal (3) Propanal (4) 2-Methylpropanal

Verified Answer & Explanation⌄

Correct Answer: D) 1 < 4 < 3 < 2

Concept Explanation

Methanal has 0 α-H, 2-methylpropanal has 1, propanal has 2 and ethanal has 3 α-hydrogen atoms.

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