Hydrogen Sulfide is a usual chemical compound that is helpful for evaluating inorganic link of metal ions. It has actually the chemical formula the H2S. The molecule has two Hydrogen atoms and also a solitary Sulfur atom. H2S is likewise a precursor for elemental Sulfur. It additionally plays a an important role in signaling pathways in the person body. So to understand the hybridization, polarity, and also molecular geometry that this compound, the is necessary to understand its Lewis structure.

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Name that moleculeHydrogen de defiders ( H2S)
No that Valence electrons in the molecule8
Hybridization that CO2sp3 hybridization
Bond Angles104.5 degrees
Molecular Geometry of CO2Bent

Before discovering its Lewis structure, let us calculate the total number of valence electrons in Hydrogen Sulfide together these electrons participate in bond development and aid us examine Lewis framework with ease. 

Valence electron of H2S

To know the total variety of valence electron in Hydrogen Sulfide we require to include the valence electrons of both Hydrogen and Sulfur atoms. There are two atom of Hydrogen and a solitary atom of Sulfur in the compound. 

Each Hydrogen atom has only one electron i m sorry is additionally its valence electron 

Hence there are two valence electrons because that Hydrogen atom ( together there space two Hydrogen atoms)

Sulfur has actually six valence electrons. 

Total variety of valence electron in H2S

= 2(1) + 6

= 8

Thus, there are a total of eight valence electrons in H2S. 

H2S Lewis Structure

The Lewis framework of any compound is a structural representation of the valence electron participating in the formation of bond in addition to the nonbonding electron pairs. Understanding the Lewis framework of a offered chemical compound is crucial as it gives the important information around all various other chemical nature of the compound. 

The representation is displayed using dots and lines that stand for electrons. Dots stand for the electron that carry out not participate in the link formation. Whereas, the lines stand for the binding in the compound. The framework is made based on the Octet Rule. The Octet dominance of chemistry states that there have to be eight electrons in the outer shell that an aspect for it to it is in stable.

The Lewis structure of Hydrogen Sulfide is simple to draw and understand. In this compound, both the hydrogen atoms call for one electron to do the covalent bond with Sulfur. The Lewis structure of H2S is comparable to H2S. Sulfur requirements eight electrons to accomplish the demands for Octet Rule. But Hydrogen just requires a single electron to end up being stable as it belongs to team 1 elements.


Place the Sulphur atom in the middle and also arrange that valence electrons roughly it.

Now ar two Hydrogen atom on both sides of the central atom.

Here the valence electron of Sulfur are offered to make Hydrogen secure by donating one electron to both the atom of Hydrogen. 2 out of six valence electrons participate in shortcut formation.

Draw currently ( for showing bonds) between Hydrogen and Sulphur atoms. 

 The remaining 4 electrons are nonbonding electrons and also are hence presented as dots close to the Sulfur atom. In total there room two bag of non-bonding electrons in this compound and also Hydrogen atoms have actually a finish valence shell. 

H2S Hybridization

To recognize the hybridization the H2S, the is vital to understand two points first:

The number of bonds in the compound and also its type

It is necessary to understand the form of bonding in the link to recognize its hybridization. In the H2S molecule, two Hydrogen atoms form a bond with the central Sulfur atom. Two solitary bonds are created in the molecule. This bonds take up four valence electrons, and hence there are 4 other valence electron left. While creating a link the s orbital of the Hydrogen atom overlaps with p orbit of the Sulfur atom. The lone pair of electron takes up two of the sp3 orbitals. The other two orbitals of sp3 overlap v 1s orbit of the Hydrogen atom.

This arrangement leads to the sp3 hybridization that H2S molecule. The overlapping of the two-hybrid orbitals creates two sigma bonds between Hydrogen and also Sulfur atom.

The steric variety of the provided compound

The steric number is defined as the region of electron density seen around the main atom. In this case, together Sulfur is the main atom the steric variety of the compound will certainly be the cumulative total of atoms bonded come the main atom and the variety of lone pairs of electrons around the central atom.

The formula for finding this number is:

Steric Number (SN)

 = No of sigma bonds on the central atom +No that pi lone bag on the central atom

In this situation of H2S molecules, there space two sigma bonds, and also there are two lone pairs of electron on the main atom.


Thus SN that H2S molecule = 2+2


As the Steric number of H2S is four, it has actually two 

hybrid orbitals and two lone pairs of electrons the make that an sp3 hybridization.

Now that we recognize the Lewis structure and also hybridization of the molecule, the is straightforward to identify its molecular geometry.

H2S Molecular geometry

Hybridization of the given molecule H2S is sp3; the Sulfur atom is in center bonding v two Hydrogen atoms creating the bond angle much less than 180 degrees. According to the VSEPR theory, the lone pairs of electron repel every other, but as the Sulfur atom is much less electronegative, the bond angle decreases to 104.5 degrees.

This decrease in the angle leads to a bending structure.

Another means to know Molecular geometry is by the AXN method. Whereby A denotes the main atom, X is because that the number bonded pair the electrons and also N is for the lone pair of electrons. Below the basic formula will certainly be AX2N2 due to two bonding pairs and also two lone pairs of electrons. Thus this molecule shows a bending geometry.

H2S Polarity

Now the we have actually the required information around the molecule, the is straightforward to identify its polarity. The polarity of any given molecule depends on its molecule geometry and also the overall electronegativity. Together the Sulfur atom is much less electronegative, the in its entirety electronegativity that the compound is much less than 0.4, which makes it nonpolar.

Thus it have the right to be claimed that the H2S molecule is nonpolar.

See more: What Is The Number Of Protons In Gold ? Mass And Charge Number


Concluding remarks

From the over information, it deserve to be concluded that the H2S molecule has actually eight valence electrons, sp3 hybridization, bent molecular geometry, and is nonpolar.