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Polar covalent bonds are covalent bonds in which electrons are not equally shared. As the difference in electronegativity increases the more ionic character the covalent bond has, but if the difference becomes greater than 2, would this "covalent bond" not be covalent at all and now completely ionic?
Yes, it would not be covalent anymore it would be ionic. The guidelines are: If the electronegativity difference is greater than 2 then it is an ionic bond. If the electronegativity difference is less than 1.5 then it would be a covalent bond. If the difference is between 1.5 and 2 then it would be uncertain whether the bond is covalent or ionic so one would have to look at other characteristics of the bond in order to determine what it is
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