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Which of the following molecules has a dipole moment? 1 BC 3 2 SIH4 3 NF3 4 F₂ 5 none of these

Which of the following molecules has a dipole moment? 1 BC 3 2 SIH4 3 NF3 4 F₂ 5 none of these

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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--- **Question:** Which of the following molecules has a dipole moment? 1. BCl₃ 2. SiH₄ 3. NF₃ 4. F₂ 5. None of these --- **Explanation:** In this multiple-choice question, you are asked to identify which molecule has a dipole moment. A dipole moment occurs when there is an uneven distribution of electron density in a molecule, leading to one end being partially negative and the other partially positive. - **BCl₃**: Boron trichloride is a symmetrical molecule and does not have a dipole moment. - **SiH₄**: Silane also has a symmetrical tetrahedral shape, resulting in no dipole moment. - **NF₃**: Nitrogen trifluoride is asymmetrical, resulting in a net dipole moment. - **F₂**: Fluorine gas is a diatomic molecule of identical atoms, thus no dipole moment. - **None of these**: This option would be correct if no molecule listed had a dipole moment. Therefore, option 3 (NF₃) has a dipole moment due to its asymmetrical shape. ---
Transcribed Image Text:--- **Question:** Which of the following molecules has a dipole moment? 1. BCl₃ 2. SiH₄ 3. NF₃ 4. F₂ 5. None of these --- **Explanation:** In this multiple-choice question, you are asked to identify which molecule has a dipole moment. A dipole moment occurs when there is an uneven distribution of electron density in a molecule, leading to one end being partially negative and the other partially positive. - **BCl₃**: Boron trichloride is a symmetrical molecule and does not have a dipole moment. - **SiH₄**: Silane also has a symmetrical tetrahedral shape, resulting in no dipole moment. - **NF₃**: Nitrogen trifluoride is asymmetrical, resulting in a net dipole moment. - **F₂**: Fluorine gas is a diatomic molecule of identical atoms, thus no dipole moment. - **None of these**: This option would be correct if no molecule listed had a dipole moment. Therefore, option 3 (NF₃) has a dipole moment due to its asymmetrical shape. ---
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