\textbf{206-} What is the effect of the shielding of inner electrons on the outermost electron layer of an atom? In which case does it have more influence?
\begin{enumerate}
\item[(1)] Geometric shape of molecules
\item[(2)] Reactivity of sodium element
\item[(3)] Type of number of relaxation phases in intermediate phases
\item[(4)] Boiling point of fluorine compared to elements of the same period
\end{enumerate}