使用 mhchem 包的多行向下箭头

Question

我正在使用mhchem软件包来处理文档中的化学章节。我有一个部分，其中有一个带有多行的向下箭头，如下图所示。


到目前为止我编写的这个代码是这样的；

\documentclass[10pt,a4paper]{report}
\usepackage [version=4] {mhchem}
\usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry}

\begin{document}
\noindent
\ce{Mg} \qquad strongest reducing agent, more readily becomes oxidized\\
\ce{Al}\\
\ce{Mg}\\
\ce{Zn}\\
\ce{Fe}\\
\ce{Pb}\\
\ce{Cu}\\
\ce{Ag} \qquad weakest reducing agent, least readily becomes oxidized \\

\end{document}

请告诉我如何做。谢谢！

Answer 1

您可以利用\downarrow其可扩展性：

\documentclass[10pt,a4paper]{report}
\usepackage [version=4] {mhchem}
\usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry}

\begin{document}

\noindent
$\left\downarrow
\begin{tabular}{l@{\qquad}l@{}}
\ce{Mg} & strongest reducing agent, more readily becomes oxidized\\
\ce{Al}\\
\ce{Mg}\\
\ce{Zn}\\
\ce{Fe}\\
\ce{Pb}\\
\ce{Cu}\\
\ce{Ag} & weakest reducing agent, least readily becomes oxidized
\end{tabular}
\right.$

\end{document}