Question detail
Explain why halogenoalkanes contain polar bonds.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Halogenoalkanes
Question
Explain why halogenoalkanes contain polar bonds.
Answer
Halogenoalkanes contain polar bonds due to the difference in electronegativity between the carbon and halogen atoms. This difference causes the electrons in the carbon-halogen bond to be drawn closer to the halogen, creating a partial negative charge on the halogen and a partial positive charge on the carbon. As a result, the bond is polar, which influences the reactivity of halogenoalkanes in nucleophilic substitution reactions.
Explanation
This answer is strong because it clearly identifies the cause (difference in electronegativity), explains the mechanism (electron distribution leading to partial charges), and states the effect (polar bond formation) along with its consequence (influence on reactivity). The question tests understanding of molecular polarity in organic compounds.
Common mistake
Misunderstanding Polar Bonds in Halogenoalkanes
Students often state that halogenoalkanes are polar because of the presence of halogen atoms without explaining the reason behind the polarity.
Halogenoalkanes contain polar bonds due to the difference in electronegativity between carbon and halogen atoms. The halogen atom attracts the bonding electrons more strongly than the carbon atom, creating a dipole moment. This polarity leads to the halogenoalkanes having distinct physical properties, such as higher boiling points compared to non-polar compounds.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.