Chlorite or chlorite ion or chlorine dioxide anion is made up of one chlorine and two oxygen atom through a an unfavorable charge having the chemistry formula ClO2-. The is likewise known together salts of chlorous acid. Chlorite is among the the strongest oxidizers the chlorine oxyanions.

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In this article, us will research Chlorite ion(ClO2-) lewis structure, molecular geometry, hybridization, polar or nonpolar, link angle, etc.

Chlorite has a +3 oxidation state and also is component of the chlorine oxides family. Chlorite is supplied in the paper, pulp, and also bleaching the textiles. 

Properties the Chlorite ion

It has a molar fixed of 67.452 g.The conjugate acid of chlorite ion is chlorous acid.It is a solid oxidizer.It is a salt of chlorous acid.
Name that MoleculeChlorite ion
Chemical formulaClO2-
Molecular geometry the ClO2-Bent or V-shaped
Electron geometry of ClO2-Tetrahedral
Bond angleLess than 109.5º
Total Valence electron for ClO2-20

Page Contents present
1 exactly how to draw lewis structure for ClO2-(Chlorite)
2 monitor some steps for illustration the lewis dot framework of ClO2-
3 What is the molecular geometry of ClO2-?
4 Hybridization that ClO2-
5 The bond edge of ClO2-
6 Chlorite ion polarity: is ClO2- polar or nonpolar?
8 an overview

How to attract lewis framework for ClO2-(Chlorite)

ClO2- lewis structure contains one solitary bond and also one double bond. 2 lone pairs current on the main atom of the ClO2- Lewis structure. Lewis diagram is a representation of the valence electron within a molecule.

To draw the lewis diagram of any kind of molecule, we need to follow 5 or 6 basic steps depending on the complexity of the molecule.

Here’s in this article, us will attract the ClO2- lewis structure with some simple steps including all explanations.

Follow some steps for illustration the lewis dot framework of ClO2-

1. Count complete valence electron in ClO2-

Counting valence electron is constantly the very first step we should follow for illustration the lewis diagram of any molecule. To count the valence electron the a molecule, simply watch the regular group number of an atom.

In the situation of the ClO2- molecule, chlorine belongs come the 17th routine group and oxygen 16th. Hence, the valence electron because that chlorine is 7 and also for oxygen, that is 6.

⇒ Total number of the valence electron in chlorine = 7

⇒ Total number of the valence electrons in oxygen = 6

∴ Total number of valence electron obtainable for illustration the lewis framework of ClO2- = 7 + 6(2) + 1 = 20 valence electrons  <∴two oxygen atoms, one chlorine and also one an unfavorable charge the count together a one valence electron>


2. Find the least electronegative atom and also placed it in ~ center

Now we have actually to discover the outer and central atom of the ClO2- molecule. Generally, much less electronegative stop the ar of the central atom, and also the remainder are spread evenly around it.

So, indigenous chlorine and oxygen, chlorine(3.16) is less electronegative than oxygen(3.44). Hence, put the chlorine in ~ the center, and oxygen atom spread approximately it.


3. Connect outer atoms to central atom with a single bond

Here’s in this step, us will attach outer atoms(oxygen) to the central atom(chlorine) v the assist of a single bond because that further illustration the lewis structure of ClO2-. Simply place one-one single bonds in between oxygen and also chlorine atom.


After connecting the external atom come the central atom, counting the variety of valence electron we provided till currently for making the over structure. A solitary bond developed from two-electron and in the over structure, we used two solitary bonds.

Hence, 4 valence electrons we have used in the above structure from the 20 easily accessible valence electron for illustration the ClO2- Lewis structure.

(20 – 4) = 16

We have actually left through 16 valence electron more.

4. Ar remaining valence electrons starting from outer atom first

It’s time to complete the octet the the external atom first. “The octet rule refers to the propensity of atom to favor to have actually eight electron in the valence shell”.

So, start placing the staying valence electron on the external atom(oxygen) and also complete your octet first.


So, we placed the 6 valence electron on every oxygen, together oxygen currently shares two-electron v the help of a single bond. Every oxygen in the over structure share 8 electrons, thus completed your octet comfortably.

As we had actually a full of 16 valence electrons and also in the over structure, we provided 12 an ext electrons.

(16 – 12) = 4 valence electrons

Now we room still left with 4 an ext valence electrons.

5. Complete main atom octet and make covalent shortcut if necessary

In ClO2- molecule, chlorine is the main atom and it needs 8 electrons approximately to finish the octet. Together you check out in the structure of the fourth step, chlorine currently sharing 4 electrons through the aid of two solitary bonds linked to oxygen atoms.

So, just put the 4 leftover valence electrons on chlorine and also complete that is octet.


By looking in ~ the over structure, we check out both atoms(oxygen and also chlorine) in ClO2- molecule completed their octet comfortably and we offered all our 20 complete valence electrons easily accessible for drawing the ClO2- Lewis structure.

But us don’t understand if the above ClO2- Lewis framework is secure or not, so we can’t assume the over structure, together the best and also stable lewis structure of ClO2-.

For check the stability of the lewis diagram, we will go with the ide of a officially charge.

6. Check the security with the assist of a formal fee concept

“A formal charge is a charge assigned to an atom in a molecule, assuming that electrons in all chemical binding are shared equally in between atoms.”

The structure with the formal charge close come zero or zero is the best and stable lewis structure.

We will certainly calculate the formal fee on the 5th step structure.

⇒ officially charge = (valence electrons – lone pair electrons – 1/2bonded pair electrons)

For chlorine atom – 

⇒ Valence electron that chlorine = 7

⇒ Lone pair electron on chlorine = 4

⇒ bonded pair electrons about chlorine = 4

F.C. On chlorine atom = (7 – 4 – 4/2) = +1

For oxygen atom –

⇒ Valence electron the oxygen = 6

⇒ Lone pair electrons on oxygen = 6

⇒ external inspection pair electrons around oxygen = 2

F.C. ~ above oxygen atom = (6 – 6 – 2/2) = -1


The above structure is not much stable, as the lewis structure is the most stable once the formal charge on each atom and an in its entirety formal charge of the molecule is close come zero or zero.

Let’s perform some twisted on the above structure to gain the formal fee close to zero.

As us know, chlorine deserve to hold an ext than 8 electrons because it has d orbital for extra electrons necessary for bonding. 

So, simply take one lone pair indigenous one oxygen atom, transform it come a covalent bond, and forms a Cl=O bond.


Now again determine the formal fee on the brand-new ClO2- Lewis structure.

For chlorine atom –

⇒ Valence electron of chlorine = 7

⇒ Lone pair electrons on chlorine = 4

⇒ bonded pair electrons about chlorine = 6

F.C. Top top chlorine atom = (7 – 4 – 6/2) = 0

For oxygen atom(left side) –

⇒ Valence electron of oxygen = 6

⇒ Lone pair electron on oxygen = 4

⇒ external inspection pair electrons roughly oxygen = 4

F.C. Top top oxygen atom = (6 – 4 – 4/2) = 0

For oxygen(right side) –

⇒ Valence electron = 6

⇒ Lone pair electron on oxygen = 6

⇒ bonded pair electrons roughly oxygen = 2

F.C. On oxygen atom = (6 – 6 – 2/2) = -1

∴ We gain (-1) as whole formal fee on the new ClO2- lewis structure and also two atoms have zero official charges, hence, this lewis framework of ClO2- is secure and better than the ahead structure(5th action structure).


This is the best and stable lewis dot framework of ClO2- as it consists of the minimum officially charge, also, dues on chlorine and also one oxygen is zero.

ClO2- molecule consists of a negative charge also, so, we put -1 external the bracket in the over structure. Also, Chlorite ions deserve to exist in multiple resonant states due to the shifting of bonds.

What is the molecular geometry that ClO2-?

“Molecular geometry is the three-dimensional plan of atoms in a molecule”. The molecular geometry of ClO2- is bending or V-shaped. 

According to the lewis structure of ClO2-, chlorine is the main atom that has 2 lone pairs on it, these lone bag occupy much more space than bond pair electron and try to repel every other. As a result, external inspection pair about the oxygen atom pushes apart, this causes oxygen atom is moved closer together.


Therefore, the result molecular geometry of ClO2- appears like a bent or V-shaped.

Let’s see how to discover the molecular geometry that ClO2- utilizing the AXN technique and VSEPR theory.


That’s just how the AXN notation follows as displayed in the over picture.

AXN notation because that ClO2- molecule:

A to represent the central atom, so together per the ClO2- lewis structure, chlorine is the main atom. A = ChlorineX to represent the external inspection atoms, together we know, chlorine is fastened to 2 oxygen atoms. Therefore, X = 2N to represent the lone pair, the chlorine atom has two lone pairs on it. Hence, N = 2

So, the AXN formula for the ClO2- molecule becomes AX2N2.

According come the VSEPR theory, if a molecule central atom is attached v two bonded atoms and has 2 lone pairs climate the molecule geometry of the molecule is V-shaped or bent.

Hence, the molecular form or geometry for ClO2- is bent.


ClO2- molecular geometry

The electron geometry because that ClO2- is tetrahedral.


Hybridization of ClO2-

To find the hybridization of one atom, we have to first determine its hybridization number.

“Hybridization number is the enhancement of a total number of bonded atoms about a main atom and the lone pair existing on it.”

∴ Hybridization number of ClO2- = (Number the bonded atom attached to chlorine + Lone pair on chlorine)

According come the lewis structure of ClO2-, we have two bonded atoms(oxygen) attached come the chlorine and two lone pair existing on it.

∴ Hybridization variety of ClO2- = (2 + 2) = 4

Hybridization numberHybridization

So, for a hybridization variety of four, we gain the Sp3 hybridization ~ above the chlorine atom in the ClO2- molecule.

The bond angle of ClO2-

“A bond edge is the geometrical angle in between two adjacent bonds”.

The bond angle of ClO2- is less 보다 109° due to the presence of two lone bag on chlorine atoms as these lone bag repel every other and that pushes bonded atom closer together, hence causes the lower bond angle.


Definitely ClO2- is polar in nature together it lacks symmetry because it has actually a molecule geometry that bent, which means dipole generated along with Cl-O bond unable to canceled the end each other providing some dipole minute in the molecule.

The lone pair visibility on chlorine reasons an unsymmetrical charge distribution in the molecule, for this reason the induced charges on the Cl-O bond carry out not cancel each various other completely.

Also, the visibility of a negative charge over the atoms provides the Cl-O bonds polar in nature.

Hence, all these components lead to ClO2- a polar molecule in nature.


Why go the chlorine in ClO2- lewis structure, has electrons of an ext than 8 and violate the octet rule?

Whenever the d-orbitals and also beyond to it, get involved in bonding with other atoms then an broadened octet is produced.

Chlorine atom in ClO2- lewis structure expanded the octet because it has d-orbitals in the 3rd principal energy level, hence, it has extra orbital(d-orbital) for added electron necessary for bonding.

Sulfur, phosphorous, and also silicon are some other examples that can broaden their octet and also hold electrons more than 8.

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Why does the molecule geometry the ClO2- shows up bent in shape?

This is since of the existence of two lone bag on chlorine main atom the pushes both oxygen atom closer together, this reasons a lower O-Cl-O shortcut angle, hence, that is shape appears as bent choose structure.


The full valence electron available for the Chlorite (ClO2-) lewis structure is 20.The hybridization that chlorine in the ClO2- the molecule is Sp3.ClO2- is a polar molecule because of the asymmetrical distribution of charges caused by the visibility of lone pair electrons.The overall formal fee in ClO2- is -1.The bond edge in ClO2- is slightly much less than 109°.The molecule geometry that ClO2- is V-shaped and electron geometry is tetrahedral.Total number of 7 lone pairs and also 3 bond pairs current in the lewis dot structure of ClO2-