Part A Draw the Lewis structure for HCN. Draw the Lewis dot structure for the molecule. Include all lone pairs of electrons. Part B Draw the Lewis structure for XeF4. Draw the Lewis dot structure for the molecule. Include all lone pairs of electrons. Part C CO2 Write the Lewis structure for the molecule. Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default.