Which of the following carbonyl compounds for | vedclass

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(D) The stability of a hydrate formed by the addition of $H_2O$ to a carbonyl group depends on the electrophilicity of the carbonyl carbon and the pre

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Indane$-1,2,3-$trione

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(D) The stability of a hydrate formed by the addition of $H_2O$ to a carbonyl group depends on the electrophilicity of the carbonyl carbon and the presence of intramolecular hydrogen bonding. Indane$-1,2,3-$trione has three carbonyl groups. The central carbonyl group is highly electrophilic due to the electron-withdrawing effect of the two adjacent carbonyl groups. Upon hydration,the resulting gem-diol (hydrate) is stabilized by intramolecular hydrogen bonding between the hydroxyl groups of the hydrate and the oxygen atoms of the adjacent carbonyl groups. This stabilization makes the hydrate of indane$-1,2,3-$trione significantly more stable than the hydrates of the other given compounds.

Which of the following carbonyl compounds forms the most stable hydrate when $H_2O$ is added across the $C=O$ group?

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