198. How many of the following statements are correct?
Sharing electrons is a common property of metals and nonmetals.
In general, metals and nonmetals have high reactivity and low reactivity, respectively.
In a period of the periodic table, the metal with a lower atomic mass has more metallic character.
In general, solid $p$-block elements in the periodic table are crystalline and have no smooth surfaces.
Elements whose last two electrons are in the same subshell are in the same group of the periodic table.
(1) five (2) four (3) three (4) two
\textbf{198.} How many of the following statements are correct?
\begin{itemize}
\item Sharing electrons is a common property of metals and nonmetals.
\item In general, metals and nonmetals have high reactivity and low reactivity, respectively.
\item In a period of the periodic table, the metal with a lower atomic mass has more metallic character.
\item In general, solid $p$-block elements in the periodic table are crystalline and have no smooth surfaces.
\item Elements whose last two electrons are in the same subshell are in the same group of the periodic table.
\end{itemize}
\begin{center}
(1) five \qquad (2) four \qquad (3) three \qquad (4) two
\end{center}