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A) Compare the bond enthalpies of the carbon-carbon single, double, and triple bonds to deduce to an average π bond contribution to the enthalpy. What fraction of a single bond does this quantity represent?

B) Make a similar comparison of nitrogen-nitrogen bonds. What do you observe?

C) Write lewis structures of N2H4, N2H2, and N2 and determine the hybridization around nitrogen in each case.

D) Propose a reason for the large difference in your observations of parts a) and b).

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