Which of the following bonds is the least polar?
A) C – I
B) C – F
C) C – Cl
D) C – Br - Scottish Highers Chemistry - Question 1 - 2017
Question 1
Which of the following bonds is the least polar?
A) C – I
B) C – F
C) C – Cl
D) C – Br
Worked Solution & Example Answer:Which of the following bonds is the least polar?
A) C – I
B) C – F
C) C – Cl
D) C – Br - Scottish Highers Chemistry - Question 1 - 2017
Step 1
A) C – I
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Answer
The carbon-iodine bond has a relatively low polarity due to the small electronegativity difference between carbon and iodine.
Step 2
B) C – F
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Answer
The carbon-fluorine bond is highly polar as fluorine is the most electronegative element, creating a significant dipole.
Step 3
C) C – Cl
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Answer
The carbon-chlorine bond is also polar, but less so than the carbon-fluorine bond, as chlorine has a lower electronegativity compared to fluorine.
Step 4
D) C – Br
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Answer
The carbon-bromine bond is less polar than both carbon-fluorine and carbon-chlorine bonds, but more polar than carbon-iodine.
Step 5
Conclusion
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Answer
Comparing the polarity of the bonds, C – I is the least polar. Therefore, the answer is A) C – I.
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