2. For each of the following compounds, indicate those that may serve as (1) a good carbanion nucleophile reagent, (2) a mild Lewis acid, (3) a mild Lewis base at the central atom, (4) a strong reducing agent. (A compound may have more than one of these properties) (a) Li,(CH3)4, (b) Zn(CH3)2, (c) (CH3)MgBr, (d) B(CH3)3, (e) Al2(CH3)6, (f) Si(CH3)4, (g) As(CH3)3