Final answer:
NH3 (ammonia) has polar covalent bonding due to the unequal sharing of electrons between nitrogen and hydrogen.
Step-by-step explanation:
The compound that has polar covalent bonding is NH3 (ammonia). In NH3, the nitrogen atom forms covalent bonds with three hydrogen atoms. However, the nitrogen atom is more electronegative than hydrogen, meaning it has a higher affinity for electrons. As a result, the nitrogen atom attracts the shared electrons more strongly, creating a partial negative charge on the nitrogen atom and a partial positive charge on the hydrogen atoms. This uneven distribution of charge makes NH3 a polar molecule.