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During lecture we were told that if the electronegativity difference was greater than 2 then it was and ionic bond but if it was less than 1.5, it was a covalent bond. However, in my discussion we were told that if it was <0.4 it was covalent, between 0.4 and 1.8 was polar covalent, and greater than 1.8 was an ionic bond. My question is did I copy one of these wrong or whats the true measurements?
The book helps attest for the first part, but honestly there is probably some leeway to the numbers because of each elements bond length and/or other factors but I think it’s safe to think 2 and 1.5, easier to memorize as well!
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