## Chemistry and Chemical Reactivity (9th Edition)

a) Yes, it has asymmetrical polar bonds, making the vectorial sum of dipole moments nonzero. b) The most electronegative atoms in the molecule are the oxygens, and that's where the negative charges are concentrated. For the positive charges, hydrogen is the least electronegative. c) Possible Lewis structure: $H-C\equiv C-C\equiv N:$