Q: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
The Frankland synthesis makes organometallic compounds of this element. Dialkyl derivatives of this element are transmetallation agents in the Negishi coupling. The carbonate ore of this element is smithsonite, while its silicate is hemimorphite. Franklinite is a spinel of this metal but its most important source is sphalerite ore . This element is present in the active sites of carboxypeptidase and carbonic anhydrase, while a method of transforming alpha-haloesters to beta-hydroxy-esters uses an enolate of this metal and is named for Reformatsky. This metal is also coordinated to two cysteine and two histidine residues in some DNA binding domains, its namesake fingers. For ten points, name this transition metal with atomic number 30 and chemical symbol Zn.
A:
Science