The Sulfur Dioxide i beg your pardon is also known together Sulphur Dioxide is the reality of a bond between Sulfur and Oxygen atoms. The is known as a formula written as SO2. Below we will administer an explanation that SO2 molecular geometry, SO2 electron geometry, SO2 link angle, and also SO2 Lewis structure.

You are watching: What is the lewis structure for so2

We understand that the form which minimizes the repulsions of electronic devices pairs is embraced by the molecule to kind the structure. The molecular shape of SO2 is same as the molecular geometry that Carbon Dioxide (CO2). We will display the bonding of SO2 there is no making presumption below.

O === S === O

Now, if we desire to check the precise molecular shape of SO2, then us should recognize the positions and number of electrons distributed between Sulphur and Oxygen. In the external level, Sulphur has actually six electrons, and the Oxygen has four of them among which one electron is supplied for every bond. So total number of ten electron in 5 pairs. To make bonds, four pairs space needed, so one pair stays alone. The two dual bonds use two pairs every and type as a single unit. 

As the solitary alone pair not counted in the shape’s description, we have the right to conclude that the molecular shape of SO2 is V-Shaped or Bent. So, our an initial perception of the original structure walk not complement with the initial one. 


Difference that Electron Geometry Vs molecule Geometry

Though there space so plenty of similarities in between the electron geometry and also molecular geometry, there space some an essential differences. One of the most notable distinctions is the the electron geometry have the right to be linked with one or much more molecular shapes. It counts on the main atom’s structure of electron of the molecule, when the molecule geometry relies on the various other atoms too which are bonded to the main atom or the cost-free pairs that electrons.

SO2 Electron Geometry

The electron geometry of SO2 is developed in the shape of a trigonal planner. The 3 pairs that bonding electrons arranged in the plane at the edge of 120-degree. Together the one pair stayed alone, two dual pairs space bonded and type a bend shape.

SO2 Lewis structure

To produce the Lewis structure of SO2, you have to arrange the eight valence electrons on the Sulphur. To style the finest Lewis structure, you also need to calculate the formal charge of every atom too. You understand that both the Sulphur and also Oxygen has actually six valence electrons each. Below we have two Oxygen atoms, so a total number of valence electrons will be eighteen.

We will location Sulphur at the center and Oxygens in ~ outsides. Currently we will put the pair of electrons between the atoms to create bonds.Now let’s calculate the officially charges.For Oxygen:No. The valence electron = 6No of binding = 2Lone bag = 2So, Formal charge (FC) = No. Of valence electrons – No. Of binding – 2 X (No. Of lone pairs) = 6-2-(2×2) = 0For Sulphur:No. Of valance electron = 6No. Of bonds = 2Lone bag = 2So, FC = 6-2-(2×2) = 0Now, us will type the structure by perfect the octet v the most electronegative element O. Us will location a dual bond and also a single lone pair with each atom of Oxygen.We will end up the structure by place the stayed valence electron on the central atom. Below we have four bond pairs and also four lone pairs, so complete electrons supplied are (4+4) x 2 = 16. So, the variety of remained valence electrons room 18-16 = 2. Us will put these electrons on the atom that Sulphur.So, our final Lewis structure of SO2 will certainly be like:


SO2 shortcut Angle

The SO2 has a bond angle of 120-degree. One solitary atom of Sulphur is bonded v two atoms of Oxygen covalently. It causes a repulsion of electron bag to kind the 120-degree angle.

See more: Which Level Of Organization Is Represented By The Eye ? 10 Levels Of Biological Organization

Is SO2 Polar or Non-Polar?

By assessing the Lewis framework of SO2, we deserve to see the the SO2 is asymmetrical because it includes a region with different sharing. The molecular geometry the SO2 has actually a bent shape which method the top has less electronegativity, and the bottom inserted atoms of Oxygen have more of it. So, the conclusion is, SO2 is a Polar molecule.


Here, we have described the molecule geometry, electron geometry, Lewis structure, link angle, and polarity the SO2 (Sulfur Dioxide). You deserve to share your thoughts for any kind of information missed right here or if you want to know much more about anything. Girlfriend will acquire a answer from the expert.