They are categorized by the metal’s position in the periodic table:
Main group (e.g., Grignard reagents, R-Mg-X).
Transition metal (e.g., Ferrocene, Pd(PPh₃)₄).
Lanthanide/Actinide (e.g., Cp₃Ln, used in polymerization).
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile