Electronegativity and bond polarity Quiz
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5 questions, one answer each
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1. Which molecule has polar bonds but no permanent dipole?
- A. H₂O
- B. BF₃
- C. NH₃
- D. HCl
2. In a C–F bond, which statement is correct?
- A. Carbon is δ−
- B. Fluorine is δ+
- C. Fluorine is δ− because it is more electronegative
- D. Both atoms are neutral
3. Why is the bond in H₂ non-polar?
- A. It is ionic
- B. The bonding pair is shared equally between identical atoms
- C. Hydrogen has no electrons
- D. The atoms have different electronegativities
4. Which molecule has a permanent dipole?
- A. CCl₄
- B. CO₂
- C. SF₆
- D. CH₃Cl
5. Which trend is correct for electronegativity?
- A. Increases down a group
- B. Decreases across a period
- C. Increases across a period
- D. Is constant in a group