iran-konkur 2013 Q204

iran-konkur · Other · konkur-riazi_1392 Not Maths
204- Which statement about $\text{Be}_4$ is not correct?
  1. [(1)] It is a very reactive metal and reacts with water at room temperature.
  2. [(2)] The first ionization energy of its atom is greater than the first ionization energy of atom B.
  3. [(3)] The azimuthal quantum number ($l$) and magnetic quantum number ($m_l$) of its electrons are all zero.
  4. [(4)] Its atomic radius, compared to carbon, is larger and its electronegativity is less than carbon.
\textbf{204-} Which statement about $\text{Be}_4$ is \textbf{not} correct?

\begin{enumerate}
\item[(1)] It is a very reactive metal and reacts with water at room temperature.
\item[(2)] The first ionization energy of its atom is greater than the first ionization energy of atom B.
\item[(3)] The azimuthal quantum number ($l$) and magnetic quantum number ($m_l$) of its electrons are all zero.
\item[(4)] Its atomic radius, compared to carbon, is larger and its electronegativity is less than carbon.
\end{enumerate}