Answer:
Electronegativity difference
Step-by-Step explanation:
The periodic trend that determines whether a covalent bond is polar or nonpolar is the electronegativity difference between the atoms forming the bond. If there is a significant difference in electronegativity between the atoms, the bond tends to be polar. If the electronegativity difference is minimal or nonexistent, the bond is nonpolar.
Learn more about electronegativity here : https://brainly.ph/question/12872583