Is SF4 Polar Or Nonpolar

polarity of sf4

Sulfur tetrafluoride is a chemical compound that is a very colorless and corrosive gas, which releases dangerous hydrofluoric acid exposed to moisture or water.

In the SF4, the fluorine is more electronegative than sulfur. The electronegativity of sulfur is 2.6, and the electronegativity of fluorine is 4.0, which proves that fluorine is more electronegative than sulfur.

The sulfur in the center becomes the positive pole, and fluorine obtained on the sides becomes the negative pole.

Are you wondering is SF4 polar or nonpolar? This article will clarify all your confusion about SF4 polarity, molecular geometry, and it’s hybridization.


The formula of sulfur tetrafluoride is SF4.

Is SF4 Polar Or Nonpolar

Explanation 1:

The sulfur tetrafluoride (SF4) is a polar molecule because, in SF4, the sulfur atom consists of one lone pair, due to which the shape of the molecules becomes asymmetric. The fluorine is more electronegative than sulfur. The charge distribution is not equally distributed, resulting in a polar molecule.

Explanation 2:

The sulfur tetrafluoride (SF4) is a polar molecule because there are five electrons. One of them is free on those five, which is a non-bonded pair. So that pair will be on the central plane of the molecule; therefore, the SF4 is polar.

Explanation 3:

The sulfur tetrafluoride (SF4) is a polar molecule because The Sf4 geometry will be an asymmetric distribution of the electron region around the central atom (S); therefore, SF4 is a polar molecule.

Explanation 4:

The sulfur tetrafluoride (SF4) is a polar molecule because in SF4 lone pair is one; therefore, it is polar. If the lone pair is odd, then it will be polar, but if the lone pair is even, it will be nonpolar.

With that, it’s also essential to know about the BF3 NH4 and SO3 polarity.


Simple is that SF4 is a polar molecule.

SF4 Molecular Geometry

The molecular geometry of SF4 is a see-saw type with a lone pair of valence electrons. The shape of the SF4 is trigonal bipyramidal. The trigonal bipyramidal molecular geometry results when there are zero lone pairs and five bonds in the molecule’s central atom. Three bonds are arranged at 120°, and the other two are placed at the atom’s axis.


The molecular geometry of SF4 is a see-saw type with a lone pair of valence electrons.

SF4 Lewis Structure

SF4 Lewis Structure
Lewis structure for SF4

To draw the Lewis structure of SF4, read the below instructions.

  1. It is recommended to use the periodic table to determine the total number of valence electrons in the SF4 molecule.
  2. Once you know the number of valence electrons, distribute them around the central atom. 
  3. In the SF4, the sulfur is the least electronegative; therefore, it will go to the structure’s center.
  4. The total number of valence electrons in the SF4 Lewis structure is 34.

To draw the Lewis structure for SF4, easily watch this video.

Hybridization Of SF4

If you want to understand the hybridization of SF4, you need to understand its Lewis structure and the number of valence electrons present in the SF4. The SF4 has 34 total number of valence electrons where six electrons come from the sulfur, and each of the fluorine atoms have 7 electrons, so it becomes 7*4=28+6=34

In SF4, the s atom is bonded to four fluorine atoms and one lone pair. The S atom valence electrons are six, where four of them went in bonding with four fluorine atoms and the remaining two as a lone pair in the S atom. They are hybridized orbitals. Therefore the hybridization of SF4 is sp3d.

The shape of the molecule is see-saw; it’s because of the presence of one lone pair.

Essential Points To Remember:

  1. Five hybrid orbitals will be formed.
  2. The central sulfur atom has one lone pair and is bonded to the four fluorine atoms.


The hybridization of sulfur tetrafluoride (SF4) is sp3d.

Is SF4 Ionic Or Covalent

The SF4 is a covalent bond.


Simple is that SF4 is a covalent bond, not ionic.

SF4 Is Lewis Acid Or Base

SF4 is a Lewis acid because it has a lone pair on the S.


Simple is that SF4 a Lewis acid.

Uses Of Sulfur tetrafluoride (SF4)

  • The SF4 is useful for the preparation of organofluorine compounds.
  • Sulfur tetrafluoride is used as a pesticide intermediate.
  • Sulfur tetrafluoride (SF4) lubricity improvers. 
  • It is used in oil-repellent materials.


The above are the few uses of SF4.

Properties Of Sulfur tetrafluoride (SF4)

  • The chemical formula of Sulfur tetrafluoride is SF4.
  • The molar mass of SF4 is 108.07 g/mol.
  • SF4 gas is colorless in appearance and is very toxic.
  • The melting point of SF4 is −121.0 °C.
  • The boiling point of SF4 is −38 °C.
  • It is soluble in water.
  • Its molecular shape is a seesaw.
  • The dipole moment of the SF4 is 0.632.


The above is the few properties of sulfur tetrafluoride (SF4) 

Sulfur Tetrafluoride Intermolecular Forces

The SF4 has a stronger dipole-dipole intermolecular force.

Related Questions

What is seesaw shape?

In the seesaw shape, the central atom is surrounded by four adjacent atoms. These four atoms are arranged in a different plane. Two are arranged in the same plan (axial), and the remaining two are equatorial. Sulfur tetrafluoride (SF4) is an example of a seesaw shaped.

Is sf4 a dipole?

The SF4 has a see-saw structure, which leads to an overall dipole.

Can sf4 be hydrolysed?

Yes, SF4 can be hydrolyzed because, in SF4, the sulfur has a +4 oxidation state, but when they accept electrons pairs from H2O molecules, the oxidation state becomes +6. Therefore SF4 can be hydrolyzed.

Does sf4 dissolve in water?

The SF4 have colorless gas, which has a very distinct smell, This gas is very toxic, and it’s irritant to eyes and skin. SF4 is heavier than air, and it reacts with water vigorously (with force and energy).

Final Thoughts

That was all about is SF4 polar or nonpolar. I hope it’s now clear to you that sulfur tetrafluoride (SF4) is a polar molecule.

I have explained why SF4 is polar. If I talk about SF4 molecular geometry, so it’s a see-saw shape.

You can easily draw the Lewis structure for SF4 by watching the above video.

The SF4 is a covalent bond, and its hybridization is sp3d. Sulfur tetrafluoride (SF4) is a lewis acid, and it is used in oil-repellent materials.

Do you think we have missed something about SF4 polarity? Let us know in the comments section below I will add them.

Rate This Article!
User Review
0 (0 votes)

Leave a Reply

Your email address will not be published. Required fields are marked *