We have previously disputed the Lewis frameworks of CO2, O3, SO2, SO3 and more. Today we are going come learn about the Lewis structure of H2O molecule together with its molecule geometry and shape.

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Water is just one of the most uncomplicated chemistry compounds come understand given it has a simple Lewis structure. If we constantly knew chemistry is everywhere, we definitely didn’t know that even water has actually chemical formulas back in our childhood days. Water has actually a chemical formula the H2O as it is consisted of of two hydrogen atoms and also one oxygen atom. This molecule additionally has another chemical name of Dihydrogen monoxide.

Name that moleculeWater ( H2O)
No of Valence electrons in the molecule8
Hybridization of H2Osp3 hybridization
Bond Angles104.5 degrees
Molecular Geometry the H2OBent

In this blog, we will certainly look at its Lewis structure, Hybridization, molecule Geometry and Bond angles. This can aid you recognize the other physical and also chemical nature of the molecule. But prior to looking in ~ its Lewis Structure, us will an initial go v the total variety of valence electrons for this molecule together these electrons room the persons that participate in bond formation.


H2O Valence electrons

To obtain the total variety of valence electrons because that this molecule, us will add up Hydrogen and also Oxygen atoms’ valence electrons.

Valence electrons of Hydrogen: 1*2 ( together there space 2 Hydrogen atoms, we will multiply the by 2)

Valence electrons of Oxygen: 6

Total variety of valence electron in H2O: 2 + 6

= 8 valence electrons

Thus, H2O has actually a full of 8 valence electrons.

H2O Lewis Structure

Lewis structure for any molecule help to understand the bonds developed in the structure and also the electrons participating in the bond formation. The electrons that participate in bond formation are well-known as the bonding pair that electrons. In contrast, the ones the don’t take component in any bond formation are referred to as nonbonding bag of electrons or lone pairs of electrons. 

Here we will first place the atoms and individual valence electrons to understand the Lewis structure of H2O step-by-step.

Oxygen atoms will take a main position together Hydrogen atoms always go ~ above the outside. So location Oxygen in the centre with both the Hydrogen atoms on the side. Every Hydrogen atom below needs one much more valence electron to achieve a stable structure. Similarly, Oxygen atom needs two valence electron to complete its octet.

Both Hydrogen atoms will certainly share one valence electron of the Oxygen atom to obtain a steady structure. For showing the share of electrons, display a solitary bond on both sides. 

This is the Lewis structure of the H2O molecule that has actually two single bonds between Oxygen and Hydrogen. As a result, there space two lone pairs in this molecule and also two bonding bag of electrons. 


H2O Hybridization

When 2 atoms share electrons and form bonds, over there is the formation of hybridized orbitals. This orbitals help us come predict the hybridization of the molecule. Right here we will look at the Oxygen atom’s hybridization together it shares 2 of its valence electrons v both Hydrogen atoms. 3 2p orbitals the Oxygen and one 2s orbital room hybridized as there space two pairs of bonding electrons and also two lone pairs. And also as 4 orbitals that Oxygen are hybridized, the hybridization that H2O is sp3.

See more: Difference Between A Square And A Rectangle ? Difference Between Square And Rectangle

H2O molecular Geometry

The molecular geometry of any kind of molecule counts on that Lewis structure, the arrangement of atoms and also its electrons. In H2O molecule, the Oxygen atom forms two solitary sigma bonds with Hydrogen atoms. Back these two Hydrogen atoms space arranged symmetrically in the plane, the two lone pairs of electron on the Oxygen atom press these atoms. 

As the repulsion pressures from the lone pairs are an ext than the repulsive pressures of bonded pairs, the setup of atoms is distorted. Hence the molecular geometry of the water molecule is angular or v-shaped, and also some people additionally refer come this bond geometry as distorted tetrahedron geometry. 


H2O shortcut Angle

The bond angles for the molecules having a tetrahedral geometry is 109°, yet as the geometry the H2O molecule is distorted due to the visibility of the lone pairs of electrons, the bond angle decreases indigenous 109° come 104.5°


H2O Shape

The molecular shape of the H2O molecule is bent.

Concluding Remarks 

To summary this short article we can say the the H2O molecule comprises 2 hydrogen atoms and one oxygen atom.There space a complete of 8 valence electrons because that this molecule, the end of which four are provided to form O-H sigma bonds.There are two lone bag on the Oxygen atom as it doesn’t get involved in forming bonds.The oxygen atom in the H2O molecule has sp3 hybridization, and also the bond angle of H-O-H is 104.5°The molecular geometry and the form of the water molecule room bent because of the repulsion pressures of lone pairs.