January 2018 NY Regents Chemistry Exam
37 Which bond is most polar? (1) C–O
Solution:The polarity of the bond is based on the electronegativity difference. Electronegativity values can be found in Table S on the Reference Table. All we need to do is to find electronegativity value for each element holding a bond. Then, subtract the bigger number from the smaller number to find electronegativity difference. The pair that has the highest electronegativity difference represents the most polar bond.
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