In thisarticle, we are going to learn around carbon dioxide (CO2) Lewis dot structure,molecular geometry, hybridization, molar mass, and many other facets of CO2in complete details.

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We willguide you to clear every doubt and also misunderstanding for what you space here. So,without wasting your time, let’s start…

Carbondioxide which chemical formula is CO2 is a colorless gas uncovered on the earth’satmosphere together a map gas.The CO2 molecule is a triatomic molecule in i beg your pardon carbon is covalently double bondedwith oxygen top top both sides whereby bond length is around 116.3 pm.

Carbondioxide is widely used in the food industry, oil industry, chemical industry, biologicalindustry, and also many more. Most commonly it is provided as a fire extinguisher in dailylife. It has actually a straight and really close relationship with human as we emission CO2after input of O2.


CO2 Lewis Structure

CO2 has actually a complete of 16 valence electrons (carbon has 4 and also two oxygen have actually 12) which room structured as O=C=O. Both oxygen and also carbon atoms require 8 electron to finish octet in your outermost shells.


Here both oxygen atom share two-two electrons through the carbon atom to form two dual bonds (O=C) i m sorry can also represent by simply placing four dots because that a dual bond as presented in the above figure.

Steps come be complied with for drawing CO2 Lewis structure

1. Uncover out the total number of valence electrons

CO2 is comprised of two different atoms: Carbon (C) and also Oxygen (O) so first, us should figure out the valence electron of these 2 atoms separately.

Valence electron of carbon atom = 4

Valence electron the oxygen atom = 6

Here in this molecule, we have actually one carbon atom and two oxygen atoms. Now,

Total variety of valence electrons: 4 + 6*2 = 16.

2. Recognize the total variety of valence electrons pairs

As we recognize the total variety of valence electrons are equal come the enhancement of sigma bonds, pi bonds, and also lone pair current at the valence shells. However it deserve to be simply calculated by just separating the total number of valence electron by two.

For CO2, total valence electrons space 16 (as calculated in step 1), so complete electrons pairs room 16/2= 8.

3. Find out the central atom

Finding the main atom while drawing a Lewis structure is among the trickiest parts but as defined in exactly how to attract a Lewis structure guide, there is a basic trick for picking the central atom i beg your pardon is obviously saving extra time and also energy.

The carbon atom is in the the very least number so simply it will be the main atom central by two oxygen atoms from either side.

4. Drawing a straightforward skeleton


As us have currently known the central atom therefore we deserve to easily attract a straightforward structure put a carbon atom in the center surrounded by two oxygen from either side. The skeleton looks like presented in the over diagram,

5. Put the lone bag of electron on atoms


It is time to placed lone pairs of electron on atoms. Because that this, you have to make sure every atom except the main atom must have actually 8 electrons to monitor the octet preeminence (hydrogen is an exception since it complies with duplet rules).

Place 6 electron (three lone pairs of electrons) on every carbon atom and also 4 electron (two lone pairs of electrons) ~ above the carbon atom.

We used all 16 valence electrons. Now inspect whether every atoms space completing octet or not on their outer shell, no castle aren’t. Let’s inspect by share one lone pair that electrons however again failure to complete the octet. So, let’s share 2 pairs that electrons in between both Carbon and also Oxygen. Right here we walk each atom have now 8 electrons on the outermost covering which fulfills your octet.

6. Identifying formal charge on the atom

The formal fee on every atom have the right to be calculate as,

Formal fee (F.C) = Valence electron (V) – Lone pair of electron (L) – bond pair of electrons (B)/2.

From this, we gain no fee on the molecule. Finally, this is our CO2 Lewis framework diagram.


CO2 molecule Geometry & Shape

In a CO2 molecule, the carbonatom is in the center twin bonded through two oxygen atom by every side. Both oxygenatoms have actually two lone bag of nonbonding electrons present and also the main carbonatom has no lone bag of nonbonding electrons present.

The existence of exact same atoms oneither next of the central carbon atom nullifies the charge circulation becauseof the symmetrical structure. Thus, CO2 has a straight molecular geometry.

I)Electron Domain (ED) Geometry

From the above Lewis period structure, CO2 has only two regions ofelectron density about the main carbon atom because no lone pair ofelectrons presence of carbon atom.


Bothoxygen atoms have actually two lone pair of electron presence yet due come thesymmetrical structure, the impacts of lone pairs room canceled which results in alinear geometry the CO2, no bent or angular.


According toVSEPR theory, over there is a total of 16 valence electrons in i m sorry C contributes4 electrons and two O contribute 12 electrons.

From the Lewis structure of Carbon, we recognize that there space not anylone pair of electrons visibility on carbon.

Also, four pairs of electrons participate in the 2 C=Oformations that showthere room a full of 4 pairs of electrons pairs present whichforms two sigma bond.

But the results of lone bag of oxygen atoms room nullified as result of thesymmetrical structure, the CO2 molecule acquires straight molecular geometry andhas a linear shape.

Per the VSEPR model, a simple triatomic Molecule prefer CO2 has actually a structureAX2 and no lone pair that electrons, we think about two chemistry bonds to expand inopposite directions, developing a linear molecule.

CO2 bond Angle

As the molecular geometry that the CO2 is linear andarrangement prefer O=C=O which reasons the bong edge of CO2 becomes 180°. Theplaner shame geometry likewise known as direct geometry’s molecules have always180°bond angle.

CO2 Hybridization

CO2 has an sp hybridization type. The central carbon atom has actually tworegions that room responsible because that identifying hybridization. Here C has actually onlytwo sigma bonds and also no lone pairs of electrons. And also due to these two regionsaround the main carbon atom, CO2 has actually sp hybridization.

According come the VSEPR theory, we have the right to identify the hybridizationof any type of atoms based on their steric number (SN) i beg your pardon is offered as,

Steric Number (SN) =total number of lone bag + number of atoms straight attached v the atom.

If the steric number is 2atoms have sp hybridization, if SN is 3 it will be sp2 hybridization, and also so on…

In the case of CO2, The carbon atom has actually no lone pair that electrons however the C atom is fastened to 2 otherO atoms. So, the steric variety of C atom will certainly be 2 and also it has sp hybridization.

But oxygen atoms have sp2hybridization because oxygen atom’s steric number is 3 as result of two lone pair andattached atom which is carbon.

Now together per hybridizationrules, the hybridization that the whole molecule should be made decision upon the centralatom and carbon is the central atom in CO2 molecule so that CO2 molecule has actually sphybridization.

We can also find out hybridization the the molecule directly withthe help of a basic formula. The calculate is reflecting below,

Hybridization = ½


V.E = total no. That valence electron presence main on themolecule

M = Total number of monoatomic atom bonded to the main atom

C = Cation charge (positive charge)

A= Anion charge (negative charge)

Now, top top the above hybridization formula, we have to putcorresponding values to attain CO2 hybridization.

Hybridization the CO2 = ½ < 2+2+0> = 2

= sp

CO2 Molar Mass

Molar massive (M) of anymolecule is identified as the total sum that the massive of each atom in the moleculesin grams every mole. Molar fixed is additionally known together molecular weight. Basically, itis a physical residential or commercial property that is the division of the provided substance come the amountof substance. The unit is grams per mole.

Molar mass have the right to be calculatedby using this straightforward formula,

Molar fixed = Grams/mole

Calculate the molar fixed ofCO2:

To calculation the molar massof CO2, first, we have actually to find out the molar massive of Carbon and also Oxygen which are12.011g/mol and also 16 g/mol respectively.

In CO2, there room onecarbon atom and also two oxygen atoms. So, the molar fixed of CO2 is equal to (1*12.011g/mol + 2*16 g/mol) = 44.011 g/mol.

CO2 acid or Base

CO2 (Carbon dioxide) is considered as a Lewis acid because of the resonance structure that CO2 which way it can accept a lone pair that electronsfrom Lewis bases which are electron donors.

According to the Bronsted-Lowry acid-base definition, moleculesthat accept electrons space acids and those which room donated electrons room bases.So, that is thought about a Bronsted acid.

When CO2 is liquified in water (H2O), the reaction takes location betweenLewis donor (H2O) and also CO2 which offers carbonic mountain (H2CO3). However it is in theform the H+ and also HCO3- in equilibrium condition due to the fact that H2CO3 is a an extremely weak acidcapable of dissociating H+ ion in a reversible form. This is also a an extremely well-knownexample Le-Chatelier principle. You deserve to see the entirety reaction mechanism in the below example no. 1.

There is additionally another theory that explains why CO2 is mountain on shortcut formation. The central carbon atom is enclosed which double bonds withoxygen. Thus, pi electrons obtain shifted to terminal electronegative atom causesit makes a vacant orbital with central atom since a Lewis base (OH-) caneasily donate lone pair of electrons to the main atom (C).

SO2 and CO2 space the best examples the these types of Lewis acids.

Here are several of the example reactions which show CO2 (Carbondioxide) is one acid:

1. CO2 (aq.) + H2O (l.)H2CO3 (carbonic acid)H+ (free hydrogen ion) +H2CO3- (bicarbonate ion)

CO2 Polar orNonpolar

Carbondioxide (CO2) is a nonpolar molecule despite two C and O bonds are polar. Thisis since the molecule geometry that CO2 is linear and is arrangedsymmetrically so that the dipole dues on either side get cancel which outcomes in a network dipole minute is zero.

Because ofnet dipole fee of CO2 molecule is zero, there space not any kind of polarity results onmolecule in spite of the existence of 2 Carbon and oxygen polar bonds.

You have the right to readmore around this certain topic separately in brief on our other article which namedPolarity the CO2.


Carbondioxide (CO2) has actually a total of 16 valence electron which present on the outershell of atoms i.e. 4 carbon atoms and also 12 of two oxygen atoms. Indigenous this wecan easily attract the Lewis dot diagram that CO2 through adjusting two dual bondsbetween carbon and also oxygen (O=C=O).

The molecular geometry of CO2 is direct with a bond edge of 180°because the dipole charges space canceled through each various other as molecule is symmetrically arranged. Although both C=Obonds are polar however the whole molecule is nonpolar in nature.

When CO2 isdissolves in water, it produces H+ ions in the form of carbonic mountain so thatits reflects acidic behavior and considered together an acid.

Point to BeRemember

These aresome the the key points the the whole short article which are really important andcovered every the vital information about the CO2 molecule. So, if girlfriend want, youcan note this for fast remembrance.

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CO2 has actually atotal the 16 valence electron (carbon has actually 4 and also oxygen 6 valence electrons).CO2 has alinear molecular geometry v a bond edge of 180°on a plan.Molar massof CO2 is 44.01 g/mol which is additionally known together molecular weight.Carbondioxide has actually an sp hybridization kind because the steric number of main carbon is2. Carbon dioxide is a polar molecule however both C=O bonds room polar bonds.CO2 isconsidered together an acid because on dilution i beg your pardon water it produces cost-free hydrogenions.