\textbf{193-- Atom A has 8 electrons with $n=0$ and the number of its valence electrons equals the number of valence electrons of atom ${}_{31}\text{Ga}$.}
\textbf{Element A is in the same group as which element in the periodic table?}
\hspace{1cm} (1) ${}_{47}\text{Ag}$ \hspace{2cm} (2) ${}_{13}\text{Al}$ \hspace{2cm} (3) ${}_{42}\text{Mo}$ \hspace{2cm} (4) ${}_{39}\text{Y}$