# Inserting a table in a two column document

So, I've been trying to insert a table so that it spans only one column into my two column document. It partially works, however it creates a large space in the other column for a reason I can't seem to figure out. A screenshot is shown below. I'm currently using the \twocolumn package. However, I'm not sure whether this or \multicols would work better with figures and tables. Any help would be appreciated.

• welcome to tex.sx. in order to understand what you're doing, we need to see a compilable example. this looks to me like you're setting the smaller table in-line, not as a float, and there just isn't space for it in the first column. but without code, it's hard to be sure. – barbara beeton Dec 23 '16 at 15:37
• welcome again. See at the link tex.stackexchange.com/questions/89462/… or tex.stackexchange.com/questions/53384/…. – Sebastiano Dec 23 '16 at 16:00
• Use the table* environment, not table. – Bernard Dec 23 '16 at 17:22
• Thank you everyone for the replies. You were right, I hadn't set is as a float using the table* environment. After doing so, things seem to be working out much nicer. As you can probably tell, I'm rather new to latex and still trying to learn! – Nathan Dec 23 '16 at 18:09
• table* only supports t and p. multicols allows one to put a full width tabular in the middle of the page by using \end{multicols}. – John Kormylo Dec 24 '16 at 2:54

Use table for single column floats and table* for double column floats.

\documentclass[twocolumn]{article}
\usepackage{booktabs,chemformula}
\begin{document}

\section{Electronic Structure}

\input knuth

\begin{table}[h]
\centering
\begin{tabular}{@{}ccc@{}}
\toprule
Compound  & Phase    & Exp.\ Band Gap \\
\midrule
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\ch{VO_2} & Metallic & 0.00 \\
\bottomrule
\end{tabular}
\caption{Sample table}
\end{table}

\input bryson

\section{Charge Transfer}

\input ward

\begin{table*}[h]
\centering
\begin{tabular}{@{}ccccc@{}}
\toprule
Compound  & Phase    & Lattice Type & Space Group & Exp.\ Band Gap \\
\midrule
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\ch{VO_2} & Metallic & Tetragonal & P4\textsubscript{2}/mnm & 0.00 \\
\bottomrule
\end{tabular}
\caption{Sample table}
\end{table*}

\input ward

\input zapf

\input darwin

\input ward

\input darwin

\end{document}