Task: Text Categorization
Input (English): A theory pertaining to the transfer of these items uses a quantity equal to the energy required to bring the system to its final reaction coordinates under certain conditions, and won Rudolf Marcus the 1927 Nobel in Chemistry. In the post-Hartree-Fock methods, the configuration interaction functions try to correct for neglecting the correlation energy between these particles. Nitro and halide groups "withdraw" these particles from an aromatic ring. The outer most sets of these which don't participate in bonding are called "lone pairs" and are represented in Lewis structures. For 10 points, identify these particles which carry a negative charge.
Output (English): Science