2) Which of the following statements regarding the NBOs of allyl anion is true?

Question

2) Which of the following statements regarding the NBOs of allyl anion is true? a. The C-C pi bonding orbital in this molecule is polarized. b. The O-H sigma bonding orbital contains a greater contribution on hydrogen than oxygen c. The O-H sigma antibonding orbital is polarized toward hydrogen. d. The C-C sigma bonding orbital for the doubly bound carbons is higher in energy than the pi bonding orbital. e. The internal alkene carbon is characterized by sp hybridization. 3) Examine the Natural Hybrid Orbitals (NHOs) table, which lists the hybrid orbitals used to construct NBOs. Focus on the NHOs associated with the oxygen atom (4, 19, and 25; "hybrid" orbital 26 is essentially a pure p orbital). Notice that the hybrids associated with an atom do not have to be identical! Which NHO associated with oxygen has the greatest s-character (percentage s)? a. The orbital pointing toward hydrogen b. The orbital pointing toward carbon c. The orbital housing a nonbonding lone pair d. All three hybrid orbitals have the same composition. e. The s-character of the hybrids cannot be determined from information given in the NHOs table.

Explanation / Answer

2) The O-H sigma antibonding orbital is polarized toward hydrogen.

3)

the orbital pointing toward carbon

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