Top Definition. white race. white race: people of european decent are all grouped together for simplicity(even though we all know of each others variations and tribes), includes skin types of thin brown, to yellow to very white(eye color and hair color has no significance).
Best Answer: There are a few easy rules. Anything with a pair of electrons is considered a nucleophile, but the question now is how to determine which one is strong vs. weak. A weak nucleophile usually does not contain a negative charge (in most cases), for example water, H2O. H2O follows an Sn1 pathway. A strong nucleophile, like Iodine, contains a negative charge (when in ionic form) and will follow and Sn2 pathway.
Since the nucleophile is free to attack from either side, this reaction is associated with racemization. In both reactions, the nucleophile competes with the leaving group. Because of this, one must realize what properties a leaving group should have, and what constitutes a good nucleophile.For this reason, it is worthwhile to know which factors will determine whether a reaction follows an S N 1 or S N 2 pathway.ince the nucleophile is free to attack from either side, this reaction is associated with racemization. In both reactions, the nucleophile competes with the leaving group. Because of this, one must realize what properties a leaving group should have, and what constitutes a good nucleophile.