One of the first drugs to be approved for use in treatment of acquired immune deficiency syndrome (AIDS) was azidothymidine (AZT). Complete the Lewis structure of AZT.

a. How many carbon atoms use sp3 hybridization?
b. How many carbon atoms use sp2 hybridization?
c. Which atom is sp hybridized?
d. How many σ bonds are in the molecule?
e. How many π bonds are in the molecule?
f. What is the N€“N€“N bond angle in the azide (€“N3) group?
g. What is the H€“O€“C bond angle in the side group attached to the five-membered ring?
h. What is the hybridization of the oxygen atom in the €“CH2OH group?

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