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Which one of the following statements is true?
- a)The dipole moment of NF₃ is zero
- b)The dipole moment of NF₃ is less than NH₃
- c)The dipole moment of NF₃ is more than NH₃
- d)The dipole moment of NF₃ is equal to NH₃
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Which one of the following statements is true?a)The dipole moment of N...
Explanation:
Definition of Dipole Moment:
The dipole moment is a measure of the separation of positive and negative charges in a molecule and is a vector quantity. It is calculated by multiplying the charge on each atom by the distance between them.
Dipole Moment of NF:
- Nitrogen (N) is more electronegative than fluorine (F), leading to a polar covalent bond in NF.
- The dipole moment of NF is the product of the charge (due to electronegativity difference) and the bond length.
- Since the electronegativity difference between N and F is significant, the dipole moment of NF is non-zero.
- However, the dipole moment of NF is less than NH because the electronegativity difference between N and F is less than that between N and H.
Comparison with NH:
- In NH, the electronegativity difference between N and H is greater than that between N and F.
- Therefore, NH has a higher dipole moment compared to NF.
- This is why the statement "The dipole moment of NF is less than NH" is true.
Conclusion:
In summary, the dipole moment of NF is less than NH due to the differences in electronegativity between the atoms involved in the molecules.
Definition of Dipole Moment:
The dipole moment is a measure of the separation of positive and negative charges in a molecule and is a vector quantity. It is calculated by multiplying the charge on each atom by the distance between them.
Dipole Moment of NF:
- Nitrogen (N) is more electronegative than fluorine (F), leading to a polar covalent bond in NF.
- The dipole moment of NF is the product of the charge (due to electronegativity difference) and the bond length.
- Since the electronegativity difference between N and F is significant, the dipole moment of NF is non-zero.
- However, the dipole moment of NF is less than NH because the electronegativity difference between N and F is less than that between N and H.
Comparison with NH:
- In NH, the electronegativity difference between N and H is greater than that between N and F.
- Therefore, NH has a higher dipole moment compared to NF.
- This is why the statement "The dipole moment of NF is less than NH" is true.
Conclusion:
In summary, the dipole moment of NF is less than NH due to the differences in electronegativity between the atoms involved in the molecules.
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Community Answer
Which one of the following statements is true?a)The dipole moment of N...
In NH3 and NF3, the central atom (N) has a lone pair electron and there are three bond pairs. Hence, both molecules have a pyramidal shape. Since fluorine is more electronegative than hydrogen, it is expected that the net dipole moment of NF3 is greater than NH3. However, the net dipole moment of NH3 (1.46 D) is greater than that of NF3 (0.24 D).
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Which one of the following statements is true?a)The dipole moment of NF is zerob)The dipole moment of NF is less than NHc)The dipole moment of NF is more than NHd)The dipole moment of NF is equal to NHCorrect answer is option 'B'. Can you explain this answer?
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