Final answer:
The bond between an oxygen atom and a hydrogen atom is categorized as a polar covalent bond, due to the significant electronegativity difference that leads to an unequal sharing of electrons.
Step-by-step explanation:
The bond between an oxygen atom and a hydrogen atom would be categorized as a polar covalent bond. This is because there is an electronegativity difference between oxygen and hydrogen, where oxygen has a higher electronegativity and attracts the shared electrons more than hydrogen does.
This unequal sharing of electrons results in a separation of charges, with the oxygen atom acquiring a partial negative charge and the hydrogen atom a partial positive charge. As the bond has an electronegativity difference between 0.5 and 1.9, it does not fall into the category of a nonpolar covalent bond or an ionic bond, and it also does not meet the criteria for a hydrogen bond, which is an intermolecular force that occurs between a hydrogen atom of one molecule and an electronegative atom of another molecule.