Reagent and Condition
Completion requirements
\(\begin{alignat*}{10}
&\left[2\right]\\
&CH_3Cl\: \xrightarrow[uv\:or\:heat] {Br_2(g)}\\
&or\\
&CH_3Cl\: \xrightarrow[uv\:or\:heat]{Br_2(l)} \end{alignat*}\)