Caffeine is the active ingredient in coffee, tea, and some carbonated beverages. a) Add lone pairs, as needed, to the structure of caffeine. CH3 H3C Xxx ''N' N' CH3 -H b) Indicate the hybridization of the specified atoms. Be sure to consider any lone pairs you added in part a. CH3 H3C **** A sp sp spd spd 2 sp sp sp spd O spd -H 3 sp sp O spd O spd2