Electronegativity and bond polarity Quiz
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5 questions, one answer each
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1. Which bond is the most polar? (Pauling values: H 2.20, C 2.55, N 3.04, O 3.44)
- A. O–H
- B. C–H
- C. N–H
- D. C–O
2. Which molecule is non-polar?
- A. NH₃
- B. H₂O
- C. BF₃ (trigonal planar)
- D. CH₃Cl
3. What is the direction of the dipole in an H–Cl bond?
- A. Hydrogen δ−, chlorine δ+
- B. Hydrogen δ+, chlorine δ−
- C. There is no dipole
- D. Both atoms are δ−
4. What does a large electronegativity difference between two atoms lead to?
- A. A non-polar covalent bond
- B. A metallic bond
- C. A double bond
- D. Ionic bonding
5. Which statement is correct?
- A. All molecules with polar bonds are polar
- B. A molecule with symmetrical polar bonds can be non-polar
- C. Fluorine has the lowest electronegativity
- D. Non-polar molecules contain no polar bonds