Identify the hybrid orbitals used by the underlined atom in acetone, CH₃COCH₃. A) sp³d B) sp² C) None; pure p_z-orbitals are used in bonding. D) sp³ E) sp

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The underlined atom in acetone (carbon in the carbonyl group) uses sp^2 hybrid orbitals for bonding. This is because the carbon forms three sigma bonds (two with the other carbon atoms and one with the oxygen atom) and has one pi bond with the oxygen, which is characteristic of sp^2 hybridization.

Identify the Hybrid Orbitals Used by the Underlined Atom in Acetone