Question detail
Which of the following molecules is non-polar due to its symmetrical shape?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Bonding
Question
- A. HCl
- B. CO2
- C. NH3
- D. H2O
Answer
CO2
Explanation
Carbon dioxide (CO2) is a linear molecule, and although it has polar bonds, the symmetrical shape causes the dipoles to cancel out, resulting in a non-polar molecule.
Common mistake
Misunderstanding Polar Bonds
Students often confuse electronegativity with the concept of polarity, thinking that a bond is polar simply because it involves different atoms, without considering the actual electronegativity difference.
To correctly explain polar bonds, use the rule that a bond is considered polar if the difference in electronegativity between the two atoms is greater than 0.4. For example, for a bond between chlorine (3.16) and hydrogen (2.20), the electronegativity difference is 0.96, indicating a polar bond. Thus, the bond is polar due to the significant difference in electronegativity.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.