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- The purine heterocycle occurs commonly in the structure of DNA. a. How is each N atom hybridized? b. In what type of orbital does each lone pair on a N atom reside? c. How many a electrons does purine contain? d. Why is purine aromatic? purinePart A Provide the major organic product. H H HOI Draw the molecule on the canvas by choosing buttons from the Tools (for toolbars. The single bond is active by default. GNeed help with aromaticity
