The covalent bond with the greatest polarity would form in this atom pair: B. S-O.
Ionic character refers to a percentage of difference between the electronegativity (polarity) of two (2) atoms that are bonded covalently.
Hence, ionic character is directly proportional to the difference between the electronegativity (polarity) of two (2) atoms that forms a covalent bond.
Furthermore, bonded atoms of chemical element that are having the greatest difference in electronegativity usually forms covalent bonds with the greatest polarity.
The electronegativity of some of the chemical element are:
By observation, the difference between the electronegativity (polarity) of Sulfur (S) and Oxygen (0) would form a covalent bond with the greatest polarity.
[tex]S-O=3.5-2.58=0.92[/tex]
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