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Question
Which of the following bond has the most polar character?
Options:
A .  C - O
B .  C - Br
C .  C - F
D .  C - S
Answer: Option C
:
C
Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. The polar character depends on the electronegativity difference of the constituent atoms.
Since, carbon (C) is common among all options hence, the polar character of molecules will depend on the electronegativity of other atoms.
Fluorine is the most electronegative element. Hence, maximum electronegativity difference is seen in carbon and fluorine (C - F). Thus, the C-F bond has the most polar character.

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