USe these molecules to answer questions 14-17. F: H II H FC C -O: H-C-C- :F : H. H А В 14. Which molecule(s) is/are polar? A) A В) В С) С D) B and C E) A and C 15. What is the strongest type of intermolecular force present in B? A) Ion-dipole B) London dispersion C) Hydrogen bonding D) Dipole-dipole E) None of the above 16. Which molecule has the lowest boiling point? А) А В) В 25.0Co D) A and C E) All have the same boiling points.

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Chapter1: Chemical Foundations
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#16

**Molecules and Intermolecular Forces**

The following questions relate to the molecular structures provided below. Use these molecules to answer questions 14-17.

**Molecular Diagrams:**

- **Molecule A**: 
  - Formula: SiF₄
  - Structure: A central silicon (Si) atom bonded to four fluorine (F) atoms arranged tetrahedrally, with lone pairs on each fluorine atom.

- **Molecule B**: 
  - Formula: C₂H₆
  - Structure: Two carbon (C) atoms bonded together with single bonds to three hydrogen (H) atoms on each carbon, forming a linear structure.

- **Molecule C**: 
  - Formula: C₂H₄O₂
  - Structure: A carbon (C) atom double-bonded to an oxygen (O) atom and single-bonded to another carbon. This carbon is also bonded to two hydrogen atoms and another oxygen atom, which is bonded to hydrogen (forming an alcohol group).

**Questions:**

14. **Which molecule(s) is/are polar?**

   A) A  
   B) B  
   C) C  
   D) B and C  
   E) A and C  

15. **What is the strongest type of intermolecular force present in B?**

   A) Ion-dipole  
   B) London dispersion  
   C) Hydrogen bonding  
   D) Dipole-dipole  
   E) None of the above  

16. **Which molecule has the lowest boiling point?**

   A) A  
   B) B  
   C) C  
   D) A and C  
   E) All have the same boiling points.
Transcribed Image Text:**Molecules and Intermolecular Forces** The following questions relate to the molecular structures provided below. Use these molecules to answer questions 14-17. **Molecular Diagrams:** - **Molecule A**: - Formula: SiF₄ - Structure: A central silicon (Si) atom bonded to four fluorine (F) atoms arranged tetrahedrally, with lone pairs on each fluorine atom. - **Molecule B**: - Formula: C₂H₆ - Structure: Two carbon (C) atoms bonded together with single bonds to three hydrogen (H) atoms on each carbon, forming a linear structure. - **Molecule C**: - Formula: C₂H₄O₂ - Structure: A carbon (C) atom double-bonded to an oxygen (O) atom and single-bonded to another carbon. This carbon is also bonded to two hydrogen atoms and another oxygen atom, which is bonded to hydrogen (forming an alcohol group). **Questions:** 14. **Which molecule(s) is/are polar?** A) A B) B C) C D) B and C E) A and C 15. **What is the strongest type of intermolecular force present in B?** A) Ion-dipole B) London dispersion C) Hydrogen bonding D) Dipole-dipole E) None of the above 16. **Which molecule has the lowest boiling point?** A) A B) B C) C D) A and C E) All have the same boiling points.
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