Draw dot and cross structural diagram to represent the bonding in the following simple molecular compounds. In the dot and cross diagram, show only the outer shells of the atoms involved. 

Molecule	Dot and Cross diagram	Structure
Ammonia$\left({\mathrm{NH}}_3\right)$
Water$\left({\mathrm{H}}_2\mathrm{O}\right)$
Hydrogen chloride$\left(\mathrm{HCl}\right)$
Ethane$\left({\mathrm{C}}_2{\mathrm{H}}_6\right)$
Ethene$\left({\mathrm{C}}_2{\mathrm{H}}_4\right)$
Ethanol$\left({\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}\right)$
Ethanoic acid$\left({\mathrm{CH}}_3\mathrm{COOH}\right)$