Covalent Bonds [ENDORSED]

[madisondesilva1c]

How can one distinguish between polar covalent bonds and other forms of covalent bonds. Is there exceptions on the periodic table that would seemingly have a covalent bond but instead form ionic bonds?

[marisaimbroane1J]

If the difference in electronegativity is greater than or equal to 0.4, a polar covalent bond is formed. If the difference in electronegativity is less than 0.4, a non-polar covalent bond is formed. An ionic bond is formed when the difference in electronegativity is greater than or equal to 1.8.

[Isabel Bellon 4F]

It might also be helpful to think of nonpolar covalent bonds occurring with diatomic molecules (ex: H-H) as the electronegativity would equal 0, while polar covalent bonds occur with two different nonmetal elements