\textbf{234--} Which statement about carbonyl sulfide and sulfur trioxide is correct?
\begin{itemize}
\item[(1)] Their geometric shapes are similar and the central atom has a partial positive charge ($\delta+$).
\item[(2)] In both, the central atom has a linear shape.
\item[(3)] Both have two polar bonds, each greater than zero.
\item[(4)] The number of electrons of the central atom in both is equal.
\end{itemize}
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