Lewis structure of sulfite ion is drawn in this tutorial step by step. Total valence electrons concept is offered to draw the lewis structure. Resonance structures of SO32- are attracted after illustration the lewis structure.

You are watching: Lewis structure for s3 2-

Sulfite ion | sulphite ion | SO32-

Sulfite ion is one of the oxyanion that sulfur. Sulfur is in ~ +4 oxidation state in SO32-.

Steps of illustration lewis structure of SO32-

Following measures are forced to attract the SO32- lewis structure and they are described in detail in this tutorial.

find total variety of electrons the the valance shells
the sulfur and also oxygen atoms full electrons pairs center atom selection Put lone pairs on atoms check the stability and also minimize dues on atoms by converting lone pairs to bonds.

Drawing exactly lewis structure is vital to draw resonance frameworks correctly

Total variety of electrons of the valance shells the SO32-

Both Sulfur and oxygen are situated at VIA group in the routine table. So, oxygen and also sulfur atoms have actually six electron in your valence shell.

full valence electrons offered by sulfur atom = 6

There space three oxygen atom in SO32- ion, Therefore

full valence electrons provided by oxygen atoms = 6 *3 = 18

There are -2 fee on SO32- ion. Thus there space two more electrons which add to the valence electrons.

complete valence electron = 6 + 18 + 2 = 26

Total valence electron pairs

Total valance electrons pairs = σ bond + π bonds + lone pairs at valence shells

Total electron pairs are figured out by dividing the number full valence electrons by two. For, SO32- ion, Total bag of electrons space 13.

Center atom of SO32- ion

To it is in the center atom, capability of having better valance is important. Because of this sulfur has the much more chance to be the facility atom (See the figure) because sulfur can present valance the 6. So, now we can build a map out of SO32- ion.


Lone pairs on atoms

over there are already three S-O bond in the map out structure. As such only ten (13-3) valence electron pairs
space remaining. First, mark those ten valence electron pairs together lone pairs in exterior atoms (on oxygen atoms). One oxygen atom will take three lone pairs complying with the octal preeminence (oxygen atom cannot keep much more than eight electrons in that is valence shell). For 3 oxygen atoms, nine electrons pairs room spent. Currently one electron pair (10-9) is remaining. Mark remaining electron pair on sulfur atom.

Charges ~ above atoms

After, marking electron bag on atoms, we should mark charges of every atom. Each oxygen atom will obtain a -1 charge and also sulfur atom get a +1 charge.


Check the stability and minimize charges on atoms by convert lone pairs to bonds

Oxygen atoms have to hold an unfavorable charges because electronegativity of oxygen is greater than sulfur. Otherwise, we deserve to say, capacity of holding an adverse charges is great in oxygen atoms 보다 sulfur atoms. The drawn structure is not a stable one because all atoms have actually a charge
. Now, we should try to minimization charges by convert lone pair or bag to bonds. So convert one lone pair the one oxygen atom to make a S-O bond. currently there is a twin bond in between sulfur atom and one oxygen atom. Now, there are two single bonds between sulfur atom and also other two oxygen atoms.

In brand-new structure, dues of atoms are lessened than ahead structure. Now there is no fee on sulfur atom. Also, only two oxygen atoms have actually -1 an adverse charges. Now you recognize this framework of SO32- is more stable 보다 previous structure. So, this framework has more chance to be the lewis framework of SO32- ion.

Lewis structure of SO32- (sulfite) ion


Resonance frameworks of SO32- ion

Change the ar of twin bond and lone pairs of molecule to draw resonance frameworks of SO32- ion. Three secure resonance structures have the right to be drawn of SO32- ion.



Ask your chemistry questions and find the answer In sulfite and also carbonate ions, space there similar number of lone bag on all oxygen atoms?

Yes. Every sulfite and also carbonate ions contain 3 oxygen atoms. By In both Lewis structures, there are eight lone bag on every oxygen atoms.

how many electron groups are about the main atom? so32- ion

Central atom the SO32- ion is sulfur. Around sulfur atom, there are four bonds and a solitary lone pair in the lewis structure of SO32- ion. Therefore, 5 electron groups are around the main atom of SO32- ion.

Is there are charges top top sulfur atom in sulfite ion lewis structure?

There space no charges in sulfur atom. Only negative charges exist in 2 oxygen atoms.

space there pi bonds in sulfite Lewis structure?

There is just one pi bond and it is situated at in between one pxygen atom and sulfur atom.

See more: What Is 0.25 As A Percent - How Much Is The Decimal Number 0

Is lewis structure for so32- is different from lewis framework for so42-

Yes. They space different. In SO42- lewis structure, over there are four oxygen atoms roughly the sulfur atom. Therefore number of valence electrons bag are different in two ions.

connected Tutorials
SO2 lewis structure H2SO4 lewis structure NO2- lewis structureN2O lewis structure, resonance structures N2O5 resonance frameworks Resonance structures examples Nitrogen dioxide mountain