iran-konkur 2014 Q204

iran-konkur · Other · konkur-riazi_1393 Not Maths
204- Considering that atom A from period three forms ionic compounds with Cl and O having formulas ACl and $\text{A}_2\text{O}$, and atom X from the same period forms ionic compounds with N and F having formulas $\text{X}_3\text{N}_2$ and $\text{XF}_2$, which option is correct?
  1. [(1)] Atom A has electrons with quantum number $l=2$, and atom X does not.
  2. [(2)] The second ionization energy of atom A is greater than the second ionization energy of atom X.
  3. [(3)] A is an element from group IB and X is an element from group IA of the periodic table.
  4. [(4)] A dissolved in water and X dissolved in water both form hydroxide solutions.
\textbf{204-} Considering that atom A from period three forms ionic compounds with Cl and O having formulas ACl and $\text{A}_2\text{O}$, and atom X from the same period forms ionic compounds with N and F having formulas $\text{X}_3\text{N}_2$ and $\text{XF}_2$, which option is correct?

\begin{enumerate}
\item[(1)] Atom A has electrons with quantum number $l=2$, and atom X does not.
\item[(2)] The second ionization energy of atom A is greater than the second ionization energy of atom X.
\item[(3)] A is an element from group IB and X is an element from group IA of the periodic table.
\item[(4)] A dissolved in water and X dissolved in water both form hydroxide solutions.
\end{enumerate}