Chemistry, asked by ananta1998, 1 year ago

why BF3 has zero dipole moment whereas NF3 has not?

Answers

Answered by alinakincsem

Thanks for asking the question.

All the molecules having regular structures have a zero dipole moment. In case of BF3 the dipole moment is zero because it has a regular geometry and no lone pair of electrons is present on B. All the angles are 120 degree. In case of NF3 the dipole moment is not zero because of presence of a lone pair of electrons on Nitrogen atom.
Hope it helps.

Answered by ElegantDoll

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❤.NF3 is apolar molecule with polar bonds.

NF3 has unsymmetrical,three dimensional pyramidal structures,with a lone pair of electron.so the net dipole moment ofNF3 is always positive.

❤.BF3 is a non - polar molecule with polar bonds.

BF3 has symmetrical and trigonal plannar structure,with no lone pair of electrons.

So the net dipole moment of BF3is zero.

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