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Chemical Bonding and Molecular Structure — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryChemical Bonding and Molecular Structure1 Mark
MCQ
The correct order of dipole moment is:
  • A
    $\text{CH}_4<\text{NF}_3<\text{NH}_3<\text{H}_2\text{O}$
  • B
    $\text{NF}_3<\text{CH}_4<\text{NH}_3<\text{H}_2\text{O}$
  • C
    $\text{CH}_4<\text{NH}_3<\text{NF}_3<\text{H}_2\text{O}$
  • D
    $<\text{H}_2\text{O}<\text{NH}_3<\text{NF}_3<\text{CH}_4$
✓

Answer

  1. $\text{CH}_4<\text{NF}_3<\text{NH}_3<\text{H}_2\text{O}$

Explanation:

Greater the polarity, more will be dipole moment. In < NF3 nitrogen is less electronegative then 'F' so dipole moment decrease as dipole are towards fluorine.

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