Match each label below with the appropriate term. Note: there may be more than one correct answer. A Lewis diagram: two atoms of upper C l connected by a single bond. Both atoms have two electrons above, below, and to the outside of the pair. Arrow a points to the bond; arrow b to the electron dots below the left atom. A second diagram shows upper O single bonded to upper H to the left and below, with two electron dots above and to the right. Arrows c point to each of the bonds. a nonbonding electrons sigma bond represents two electrons