Question

Draw the dot and cross structure of the following:

A covalent compound formed when H₂ reacts with Cl₂.

[Atomic number: Mg = 12, Cl = 17, H = 1, N = 7]

Answer 1

A covalent compound formed when hydrogen reacts with chlorine is hydrogen chloride.

Dot and cross structure of hydrogen chloride:

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