212. Considering the figure below, how many of the following statements are correct? [Figure: Two atomic diagrams labeled A and B. Atom A has electron configuration $7e^-$, $8e^-$, $1Ae^-$ (inner shells). Atom B has electron configuration $7e^-$, $8e^-$, $7e^-$ (inner shells). The reaction shown is: A $+$ B $\rightarrow \cdots$]
Atom A, by gaining one electron, achieves a noble gas configuration.
Atom B is a strong oxidizing element and has high reactivity.
The conversion of atom A to a stable ion occurs as: $\mathrm{A^- \rightarrow A + e^-}$, is carried out.
In the reaction of A with B, per transfer of two moles of electrons, one mole of product is formed.
(1) one (2) two (3) three (4) four %% Page 24 Chemistry $\leftarrow$ 122-A $\rightarrow$ Page 15
\textbf{212.} Considering the figure below, how many of the following statements are correct?
\textit{[Figure: Two atomic diagrams labeled A and B. Atom A has electron configuration $7e^-$, $8e^-$, $1Ae^-$ (inner shells). Atom B has electron configuration $7e^-$, $8e^-$, $7e^-$ (inner shells). The reaction shown is: A $+$ B $\rightarrow \cdots$]}
\begin{itemize}
\item Atom A, by gaining one electron, achieves a noble gas configuration.
\item Atom B is a strong oxidizing element and has high reactivity.
\item The conversion of atom A to a stable ion occurs as: $\mathrm{A^- \rightarrow A + e^-}$, is carried out.
\item In the reaction of A with B, per transfer of two moles of electrons, one mole of product is formed.
\end{itemize}
(1) one \quad (2) two \quad (3) three \quad (4) four
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