Question

Draw the electron-dot structure of a hydrogen chloride molecule:

1. Which inert gas does the H atom in HCl resemble in electron arrangement?
2. Which inert gas does the Cl atom in HCl resemble in electron arrangement?

Answer 1

\[\begin{array}{cc}
\ce{H}\phantom{.}\ce{\text{}^\bullet_\bullet}\phantom{.}\ce{\overset{\bullet\phantom{.}\bullet}{\underset{\bullet\phantom{.}\bullet}{Cl}}}\phantom{.}\ce{\text{}^\bullet_\bullet}\phantom{.}\\
\end{array}\]

1. The H atom resembles helium (He).
2. The Cl atom resembles argon (Ar).