4. Draw the PARTIAL orbital pictures (p-orbitals, lone pair orbitals, and formal charge where relevant) of the following compounds. Be sure to label the hybridization of all non-hydrogen atoms and clearly show three-dimensional geometry.
H3O+ (hydronium ion)
-CN (cyanide ion)
CNH3 (formaldehyde imine)
H2C=C=O (ketene)