The ground state electron configuration of chlorine is shown.Which statement concerning an atom of chlorine is FALSE? $\begin{array} { | l | l | }
\hline \mathrm { Cl } & 1 s ^ { 2 } 2 s ^ { 2 } 2 p ^ { 6 } 3 s ^ { 2 } 3 p ^ { 5 } \
\hline
\end{array}$

Question

The ground state electron configuration of chlorine is shown.Which statement concerning an atom of chlorine is FALSE? $\begin{array} { | l | l | } 
\hline \mathrm { Cl } & 1 s ^ { 2 } 2 s ^ { 2 } 2 p ^ { 6 } 3 s ^ { 2 } 3 p ^ { 5 } \
\hline
\end{array}$

Quizplus · Accepted Answer

Explanation: A chlorine atom actually has 7 valence electrons, not 5, as indicated by its electron configuration (3s^2 3p^5) in the outermost energy level (n=3).

The Ground State Electron Configuration of Chlorine Is Shown Cl1s22s22p63s23p5\begin{array} { | l | l | } \hline \mathrm { Cl } & 1 s ^ { 2 } 2 s ^ { 2 } 2 p ^ { 6 } 3 s ^ { 2 } 3 p ^ { 5 } \\\hline\end{array}Cl​1s22s22p63s23p5​​

The Ground State Electron Configuration of Chlorine Is Shown $\begin{array} { | l | l | } \hline \mathrm { Cl } & 1 s ^ { 2 } 2 s ^ { 2 } 2 p ^ { 6 } 3 s ^ { 2 } 3 p ^ { 5 } \\\hline\end{array}$