Carbon tetrafluoride is colorless and odorless gas v the chemical formula CF4. That is non-flammable gas and is supplied as a refrigerant in assorted industries. The is an extremely stable due to the toughness of that carbon-fluorine bond. 


In this article, us will comment on Carbon tetrafluoride (CF4) lewis period structure, its molecular geometry, is that polar or non-polar, bond angle, hybridization, etc. 

CF4 is slightly dissolve in water but miscible with miscellaneous organic solvents. A high concentration the this gas can cause a deficiency of supply of air to the body which leader to abnormal breathing. This condition is known as asphyxiation.

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Properties that Carbon tetrafluoride

It can come to be a narcotic at high temperatures.It is nonflammable and soluble in chloroform and benzene.It is a potent greenhouse gas.It has a molar massive of 88.0043 g/mol.It has actually a boiling point of −127.8 °C and a melting suggest of −183.6 °C.
Name the MoleculeCarbon tetrafluoride
Chemical formulaCF4
Molecular geometry that CF4Tetrahedral
Electron geometry that CF4Tetrahedral
HybridizationSp³
Bond angle109.5º
Total Valence electron because that CF432
The formal charge of CF40

Page Contents present
1 exactly how to draw lewis structure for CF4 (Carbon tetrafluoride)
2 follow some measures for illustration the lewis dot structure of CF4
3 What space the electron and molecular geometry the CF4?
4 follow some procedures to uncover CF4 molecule geometry
5 Carbon tetrafluoride polarity: is CF4 polar or nonpolar
6 Three determinants that show the polarity that CF4
7 What is the formal fee in CF4 lewis structure and how to calculate it?
8 FAQ
9 an overview

How to attract lewis framework for CF4 (Carbon tetrafluoride)


CF4 lewis structure contains one carbon and also four fluorine atom, carbon is in the center, and all fluorine atoms neighboring it. No lone pair present on the main atom the the CF4 lewis dot structure however 3 lone pairs existing on each outer atom.

The lewis diagram of CF4 is very similar to CCl4. Stop see action by step exactly how to draw this in a an extremely simple means with all explanations.


Follow some procedures for illustration the lewis dot structure of CF4

1. Count total valence electron in CF4

The electrons found in the outermost shell of one atom are dubbed valence electrons. To discover the valence electron in the CF4 molecule, look at the periodic group of each atom current in it. As carbon is positioned in the 14th group and fluorine in the 17th. Therefore, the valence electron existing in carbon is 4 and for fluorine, it is 7.

Now to discover valence electrons in the CF4 molecule, simply include the carbon and also fluorine valence electrons.

⇒ complete valence electron in Carbon = 4

⇒ complete valence electron in Fluorine = 7

∴ complete valence electron obtainable for drawing the CF4 lewis structure = 4 + 7*4 = 32 electrons <∴CF4 has 4 fluorine atom>

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2. Discover the the very least electronegative atom and placed it in ~ center

Here we need to discover the the very least electronegative atom in the CF4 molecule so that we deserve to place it in ~ the facility in the lewis diagram. Electronegativity constantly increases from left to right in the routine table. But we recognize fluorine is the many electronegative element in chemistry. So, fluorine always goes exterior in lewis’s diagram.


Hence placed carbon in ~ the facility in the lewis diagram and also fluorine spaced evenly around it.

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3. Affix outer atom to central atom with a solitary bond

Now we have to affix each outer atom to the main atom with a solitary bond to initiate the lewis framework of CF4. So, attach all fluorine atoms to the carbon atoms with the help of a single bond.

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As you watch in the over structure, we associated all fluorine atom to the carbon atoms through the assist of 4 single bonds. And every single bond has 2 electron in it.

Therefore, 4 single bonds mean 8 electron we provided in the above structure native the complete of 32 valence electrons obtainable for illustration the CF4 lewis dot structure.


∴ (32 – 8) = 24 valence electrons.

Now, the staying valence electrons we have actually are 24.

4. Ar remaining valence electrons beginning from outer atom first

In this step, we have to put the remaining valence electrons roughly the outer atom an initial to finish their octet. So, in a CF4 molecule, the outer atom is fluorine and also fluorine demands 8 electron in the valence covering to complete its octet.

So, start placing the staying valence electrons roughly fluorine atoms first to complete their octet.

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Lewis dot framework of CF4

As you view in the above CF4 lewis period structure, we placed 6 electrons approximately each fluorine atom since fluorine currently sharing the 2 electrons through the aid of a single bond existing in between carbon and fluorine. So, every fluorine has actually 8 electrons about them and that is enough for completing your octet.

Now, carbon i beg your pardon is the main atom additionally needs 8 electrons in its valence covering to completing the octet rule. Yet by looking in ~ the over structure, we concerned know carbon already sharing 8 electrons through the help of 4 solitary bonds affix to fluorine atoms.


So, both atoms (Carbon and fluorine) that the CF4 molecule finish their octet comfortably.

Hence, we got our secure Carbon tetrafluoride lewis structure.


According come the VSEPR theory, any kind of molecule the has 4 bonded atoms connected with a central atom and also no lone pair current on the main atom acquires the tetrahedral geometry. In the case of CF4, every fluorine atoms room attached to a carbon atom, and also no lone pair is present on the main atom. So, the molecular geometry of CF4 is tetrahedral.

Also, all fluorine atom bonded to carbon atoms lie at the corners the the tetrahedron with a 109.5º bond angle between them. 

The electron geometry of CF4 is additionally tetrahedral.

Let’s see exactly how to find the electron and also molecular geometry of the CF4 molecule:-

Follow some procedures to uncover CF4 molecular geometry

1. Discover the number of lone pairs existing on the central atom of the CF4 lewis dot structure 

The lone pair is non-bonding electrons that don’t take part in chemical bonding. Together per the CF4 lewis structure, no lone pair is present on the main atom (carbon). 

Or friend can inspect the lone pair ~ above the main atom by the formula given below-


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So, carbon is the main atom the is attached to four fluorine atoms with the aid of a single bond and it has 4 valence electrons in the outermost shell.

So, L.P. Top top carbon = (4 – 4)/2

= 0

∴ The lone pair top top the main atom that the CF4 molecule is 0.

2. Uncover hybridization variety of CF4

“Hybridization is the ide of mixing atomic orbitals into brand-new hybrid orbitals (with various energies, shapes, etc., climate the component atomic orbitals) perfect for the pairing of electrons to kind chemical bond in valence bond theory”.

To find the hybridization of an atom we need to look in ~ its hybridization number or steric number.

Use the given formula to find the hybridization number because that CF4.


Hybridization variety of CF4 = (Number of atom attached come Carbon + Lone pair ~ above Carbon)

As every the CF4 lewis structure, carbon has four atoms(fluorine) attached come it and no lone pair current on it.

So, Hybridization number = 4 + 0 

= 4

So, the hybridization number for CF4 is 4 which means it has actually Sp³ hybridization.

Hybridization numberHybridization
1S
2Sp
3Sp²
4Sp³
5Sp³d
6Sp³d²

3. Use VSEPR theory or AXN an approach to identify CF4 molecule geometry

“The form of a molecule depends upon the variety of valence covering electron pairs roughly the central atom.”

According to Valence shell electron pair repulsion theory if the molecule main atom has zero lone pair and also sp³ hybridization then the molecule geometry of the molecule will certainly be tetrahedral.

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Molecular geometry that CF4

Now use another technique to discover the molecule geometry the CF4. AXN method


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As every CF4 lewis structure, AXN notation of it follow as-

A = Carbon is a main atom.X = 4 fluorine atom attached to the carbon.N = No lone pair present on the carbon atom.

So, the share formula because that CF4 is AX4.

According to the VSEPR chart, if the molecule has actually AX4 share formula then the molecular shape and also electron geometry of the molecule will be tetrahedral.

Bonded atomsLone pairGeneric formulaHybridizationMolecular geometryElectron geometry
10AXSLinearLinear
20AX2SpLinearLinear
11AXNSpLinearLinear
30AX3Sp²Trigonal planarTrigonal planar
21AX2NSp²BentTrigonal planar
12AXN2Sp²LinearTrigonal planar
40AX4Sp³TetrahedralTetrahedral
31AX3N1Sp³Trigonal pyramidTetrahedral
22AX2N2Sp³BentTetrahedral
13AXN3Sp³LinearTetrahedral
32AX3N2Sp³dT-shapedTrigonal bipyramidal
51AX5NSp³d²Square pyramidal

Octahedral


Is CF4 polar or non-polar? The CF4 molecule is nonpolar because of its symmetry tetrahedral structure yet the bond present in it polar.

The tetrahedral geometry outcomes in a symmetrical arrangement of polar bonds around the carbon atom, together a result, the same charges are distributed within the molecule which help to cancel the end the bond dipole. The network dipole moment of CF4 is zero.

Let’s take an overview of the important factors for identify the polarity the CF4.

Three determinants that suggest the polarity that CF4

1. Electronegativity: 


Higher the electronegativity of an atom an ext is the strength of attracting electrons in the direction of itself. The electronegativity because that fluorine is 3.98 and also for carbon, the is 2.5. This electronegativity difference between the carbon and fluorine atom renders each shortcut polar(C-F).

Each separation, personal, instance C-F polar link can easily be canceled out as result of the symmetrical tetrahedral form of the CF4 molecule.

2. Dipole moment

The net dipole moment of CF4 is zero. Together the fluorine is more electronegative than carbon. So, it attracts an ext electrons towards itself, i beg your pardon generates an electrical dipole represented as a vector, direction indigenous carbon to the fluorine atom.

More electronegative atoms create a partial an unfavorable charge on the whereas various other ones generate a positive charge on it. This separation of confident and negative charges is measured by dipole moment.

The vector amount of these four individuals bond(C-F) dipole is zero since all fluorine atoms are pulling electrons from carbon is in one equal and also opposite direction.

So, all C-F polar binding canceled the end leaving this molecule as nonpolar in nature.

3. Geometrical or molecule shape

The molecular geometry the CF4 is tetrahedral v all very same atoms in the surrounding. “If all 4 surrounding atoms room the very same in a tetrahedral, climate the molecule will constantly be nonpolar. The only exception is if for some reason one or more of the bordering atoms had actually a lone pair.”

As the tetrahedral shape of the CF4 molecule results in the direction the the dipole minute of everyone bond gift opposite to the vector amount of the other three dipoles. Hence, they will certainly cancel out each other and also generate zero dipole moment in the molecule.

What is the formal charge in CF4 lewis structure and how to calculate it?

The formal fee of CF4 mirrors that which atom(carbon or fluorine) has a an ext positive or an adverse charge existing on it. 


To calculate the formal fee in CF4 lewis period structure. Usage this equation given below:

⇒ Formal fee = (Valence electrons – unbonded electron – 1/2 bonded electrons)

Now we will certainly calculate the formal charge on carbon i m sorry is the main atom in the CF4 lewis structure.

⇒ Valence electron of carbon = 4

⇒ Non-bonding (lone pair) electron on carbon = 0

⇒ Bonding electron attached come carbon = 8 <∴ 4 single bonds the contain 8 electrons>

∴ (4 – 0 – 8/2)

= 0 is the formal charge on carbon in the CF4 molecule.

See more: Fraction 7/60 As A Percentage, Fraction 7/60 To Decimal Number Equivalent


FAQ

How numerous bonded pairs and also lone pairs of electrons current in the CF4 lewis structure?

According to the CF4 lewis period structure, the external inspection pair of electron in CF4 is 8(4 solitary bonds) and the lone pair of electrons is 24(3 lone bag on every fluorine atom). 

Are the lewis structure and also molecular geometry of CF4 is very same as CCl4?

Yes, the molecule geometry and lewis structure of CF4 is the very same as CCl4 since of the very same generic formula(AX4) because that both the them.