Round 7: Tossup 15

Electrons from a filled d orbital in a coordination compound donate into a vacant one of these interactions in backbonding. One type of these interactions act as a nucleophile in the first step of oxymercuration demercuration. Huckel’s rule (-5[1])determines aromaticity based on the number (15[1])of electrons belonging (15[1])to these interactions. (15[1])Conjugated systems possess a delocalized network of these (-5[1])interactions. (*) Sp2 hybridization permits the formation of these interactions that form from the sideways overlap of p orbitals. A double bond contains a sigma bond and, for 10 points, which other (10[1])type of bond? (10[1])■END■ (10[1])

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