Properties of Ethers Questions in English

(C) Williamson's synthesis involves an $S_N2$ reaction between an alkyl halide and an alkoxide ion.
For the reaction to proceed, the alkyl halide must be primary $(1^\circ)$ or secondary $(2^\circ)$ to minimize steric hindrance.
$C_6H_5Br$ (bromobenzene) does not undergo $S_N2$ reactions because the $C-Br$ bond has partial double-bond character due to resonance, and the $sp^2$ hybridized carbon atom is sterically hindered.
Therefore, $C_6H_5Br$ does not undergo Williamson's synthesis.