Nature of Bonds -Bonds between hydrogen and Nitrogen are moderately covalent. -Bonds between hydrogen and carbon are slightly covalent. -Bonds between Carbon and Oxygen are strongly covalent. -Bonds between Carbon and Hydrogen are slightly covalent. Overall, Ritalin is polar because the charge is un-evenly distributed throughout the molecule.
VSEPR Form This molecules VSEPR form is cyclic (on the molecule model drawing tab, I have explained more about this topic.) Bond angles can be determined, though. The bond angles in the hexagon are clearly 120 degrees because that evenly seperates the angles.