Question

When one atom is significantly more electronegative than another one

(difference > 1.7), a covalent bond between them is

Answer 1

If the electronegativity difference is more than 1.7, the bond will have an ionic character. If the electronegativity difference is between 0.4 and 1.7, the bond will have a polar covalent character. Lastly, if the electronegativity difference is less than 0.4, the bond will have a nonpolar covalent character.