\textbf{207-} Which statement about ozone is correct?
\begin{enumerate}
\item[(1)] Its molecule has a linear structure and is nonpolar.
\item[(2)] The length of the two oxygen--oxygen bonds in the ozone molecule are equal.
\item[(3)] Its molecule has a bent structure and is more stable than the oxygen molecule.
\item[(4)] It is an allotrope of oxygen and each oxygen atom in it has two lone pairs of electrons.
\end{enumerate}