Question

dipole moment of h20, nh3, nf3, hf ​

Answer 1

Answer:

Dipole moment is high in such compound which has it's polarity towards it's central atom.

Flourine is more electronegative than all other elements, therefore when it will be present in any compound, dipole moment will be towards itself only. So in NF3 and OF2 the dipole moment is less because flourine is not a central atom.

Now in NH3 and H2O, oxygen is more electronegative than nitrogen, as both are central atom in their respective compounds therefore dipole moment of H2O will be more than NH3. Therefore maximum dipole moment can be observed in H2O.

Now let's see dipole moment according to the compounds.

Compound—-> Dipole moment

H2O — 1.8546 D

NH3 —1.46 D

NF3 —0.24 D

OF2 —0.1759±0.0010 D

This also proves that H2O is more dipole than any other compound.