\textbf{226 –} Considering the electrostatic potential maps of propane and dimethyl ether, which statement is correct?
\begin{enumerate}
\item Converting propane to liquid is more difficult.
\item In both, the central atom has a partial positive charge.
\item The electrostatic potential maps are similar to each other.
\item Both, in an electric field, orient in the same direction.
\end{enumerate}