Problem: Arrange the following molecules in order of increasing dipole moment: H2O, H2S, H2Te, H2Se

FREE Expert Solution

We’re being asked to arrange the molecules in increasing dipole moment.


  • The dipole moment increases when the electronegativity difference among the molecules increases. 
  • Now we can see from the molecules that there is only 1 element that is different between them (central element).
  • This means we can arrange in increasing dipole moment by arranging the central element in increasing electronegativity. 

Recall that the most electronegative element is fluorine (F) while the least electronegative element is francium (Fr).


This means the trend for electronegativity is as follows: it increases from left to right and decreases down a period in the periodic table. 


The given elements are:


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Problem Details

Arrange the following molecules in order of increasing dipole moment: H2O, H2S, H2Te, H2Se

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Our tutors have indicated that to solve this problem you will need to apply the Dipole Moment concept. You can view video lessons to learn Dipole Moment. Or if you need more Dipole Moment practice, you can also practice Dipole Moment practice problems.