SF4 or sulfur tetrafluoride is a compound that has a distinct odor of sulfur or rotten eggs. This compound is generally established as being a colorless gas.

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The molecular weight of this compound is calculate to be 108.6 g/mol. SF4’s boiling and also melting points space -38 levels Celcius and also -121 levels Celcius respectively.

SF4 is a toxic gas if inhaled and also can reason serious wake up in the skin, eyes, or mucous membrane.If it gets reacted with water then toxicity fluoride and also sulfur oxide fumes room formed along with an acidic solution.

The same happens once it reacts through some acid.

When SF4 it s okay exposed to extreme heat, there are opportunities that the container with this compound may burst.The link is assumed to be stable only once the right storage problems are met. Otherwise, the is a hazardous compound, qualified of strong reactions.

Workers who obtain exposed to vapors of this compound may experience shortness of breath, headache, eye and also nose irritation, vomiting, and also more.

SF4 has actually the potential to cause serious damages as well as problems choose cancer but the data has not been accessed completely to be termed as true.

Now when we know the straightforward things around the compound, us should relocate to see various other properties of SF4 favor polarity, geometry, and also more.

How to attract Lewis Structure

If you desire to recognize the nature of any kind of compound much better then you have to study its Lewis structure.Within a Lewis Structure, atoms come together as one of two people lone electron or by developing a bond.

The valence electron that perform not type bonds are recognized as non-bonding pairs of electrons. And also the valence electrons that do type bonds are known as bonding pairs of electrons.

The Lewis framework helps one to know the share of electrons between the main and neighboring atoms in ~ a compound.

Here the central atom is Sulfur and the surrounding atoms are Fluorine. This is the general idea that how and also why Lewis structures space made.

SF4 Lewis Structure

Let united state look at exactly how SF4’s Lewis structure have the right to be formed.

The bond that are formed in between two atoms are stood for using lines. When the valence electron which execute not participate in any kind of bonding are stood for using dots.

To draw the framework of SF4 us will require to recognize the total number of valence electrons the exist in SF4.

The main atom in this link is Sulfur. Apart from this, there are 4 other Fluorine atoms.

Individually speaking,

Valence electrons of Sulfur = 6

Valence electrons of Fluorine = 7

As there are 4 atoms the Fluorine, the total variety of valence electron of Fluorine are = 4*7 = 28

Therefore; The total number of valence electrons in this compound comes to be,

= Valence electron of Sulfur + Valence electron of Fluorine

= 6+28 = 34 Valence Electrons.

Now as we understand what is the total number of valence electrons, we have the right to look ahead and see just how the bond formation takes ar in SF4.

As us told you currently that the main atom below is Sulfur, every the other atoms will type bonds through this main atom.

In this case, the other atoms room those the Fluorine.

Here the number of other atom is 4 that method that there will be four bonds in this compound in between Sulfur and Fluorine.

When this bonds are created four valence electron of both Fluorine and Sulfur room going to be used.

Now ~ 8 valence electrons being offered the total number of valence electron left is:=34-8 = 26 Valence Electrons.

The variety of Valence electron left on Sulfur is 2 and also on each Fluorine atom, 6 valence electrons are left.

Thus the total variety of remaining electrons is 26. Sulfur will have 2 valence electrons or 1 lone pair and 4 bonds.Each Fluorine atom will have 3 lone pairs and 1 bond.


Let us now move to SF4’s hybridization after we have seen that Lewis Structure.

SF4 Hybridization

Hybridization is a phenomenon that allows us to know the geometry of the compound.

In the SF4 compound, there space 4 bonding bag on the main atom and also 1 lone pair that electrons. Thus, this 5 valence electrons accounting 5 hybridized orbitals.

Below room the orbitals that this link occupies:

One 3s orbital, 3 3p orbitals, One 3d orbital.


You will be able to understand what we simply told you far better with the help of the above-given diagram.

The hybridization of any kind of compound relies solely and largely ~ above its Steric number.

Thus to discover out the Steric variety of SF4 us will should use the below-given formula.

=Number that Lone pairs on main atom + variety of bonded electrons

=4 (bonded bag of electrons) +1 (lone pair of electrons) =5

Hence, the Steric variety of SF4 is 5. Thus, the hybridization the SF4 is sp3d.

Now, let us relocate to see what the molecule geometry of SF4 is.

SF4 molecular Geometry

Any compound’s molecule geometry is an extremely easy come find.

We can discover the structure of a compound v the assist of one of two people the VSEPR design or molecular formula. The molecular formula that this compound can be written as AX4E as per the hybridization the we simply found.

All the compounds which have actually this formula are well-known to have trigonal bipyramidal molecular geometry.

In the setup of SF4, two fluorine atom bond v the central atom top top equatorial position, and also two fluorine atom bond on axial position.

The angle in between the bonding atom which room in equatorial place is 102 degrees. Whereas, the bond angle between the atoms which are in axial position is 173 degrees.

The lone pair existing on the main atom repels the bonding pair of electrons. This is why this compound SF4 looks favor a see-saw in shape.

See the below diagram come understand how the atoms room distributed amongst the airplane for the SF4 compound.


Polarity the SF4

After looking at the Lewis structure and also molecular geometry the the link it gets reasonably easy to discover the polarity of a compound.

If us look very closely at the framework then we watch that over there is one lone pair top top the main atom v 4 bonding pairs of electrons.

This leader to one asymmetric arrangement.

Two the the Fluorine atoms deserve to cancel the dipole moment of every other yet the other two Fluorine atoms can’t perform the same because of their distribution.

Thus, this brings us to the conclusion the SF4 is Polar in nature as the dipole moment is not zero.

Read out the detailed article on the polarity the SF4.

MO diagram of SF4

It is vital to learn around a MO diagram of a compound since it reflects us just how the bond are created within the compound.

The whole ide of this diagram is heavily based on Molecular orbit Theory.

It becomes simple to define the structures and bonds in compounds once we know just how their MO diagrams look like.

Below is the MO diagram i beg your pardon you can read and also study to know around SF4 in an ext detail.


Now together you have looked at the MO diagram we deserve to move front to comment on the properties of SF4.

Application the SF4

Here are some of the applications of SF4 that you should recognize about:

Used to make water and also oil repellent materials and also pesticides.Used to include fluorine to products like rubber and organic compounds.Used as a selective fluorinating agent.Used to transform metal oxides into fluorides.

Let us now move ahead and wrap up our session of learning about this compound in detail.

In a Nutshell

There is a total of 34 valence electron in SF4 and also on the main atom, there are 4 bonding bag of electrons and 1 lone pair that electrons. Fluorine has 3 lone pairs on every of the four atoms.

The hybridization of this link is sp3d in nature.

Also, the compound is polar in nature as the dipole moment is not zero for SF4.

The molecule geometry that SF4 according to its molecular formula and also hybridization is trigonal bipyramidal.The shape generally resembles a see-saw and also this shape is as result of the repulsion in bonding and lone pairs of electrons.

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We hope that this write-up was insightful enough and also you obtained the simple idea about this exciting compound.In situation you have any type of doubts about the article, please feel complimentary to reach the end to our team.