(*) Boron trifluoride is the canonical example of a class of compounds named for him, and the ability to receive or donate pairs of electrons classifies his namesake acids and bases.
A class of compounds named for this scientist are used as catalysts of Diels-Alder and Friedel-Crafts reactions. Pearson also names a class of compounds named for this scientist that are ranked based on charge density as "hard" or "soft." (*) Boron trifluoride is the canonical example of a class of compounds named for him, and the ability to receive or donate pairs of electrons classifies his namesake acids and bases. Resonance is often depicted using multiple copies of a diagram named for this scientist that writes the element symbol in the middle and surrounds it with electrons. For 10 points, give this American scientist who names a common "dot diagram."
A class of compounds named for this scientist are used as catalysts of Diels-Alder and Friedel-Crafts reactions.
Gilbert Newton Lewis (accept (hard/soft) Lewis acids or Lewis bases)