SO3 charge – the formal charge of co3 is equal to zero. Central atom “sulfur” and out side atoms “oxygen” both atom has zero formal charge.

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SO3 Charge

first we will draw the lewis structure of so3. this structure is helped to understand about Lewis structure and formal charge also.

Sulfur has 6 valence electrone, sulfur is a central atoms and 3 oxygen around it as show in first figure.

so3 charge

You can see, sulfur has only 6 valence electrone. so sulfur required more then 6 electrons to complete octal, so it need to resolved them. and it is clear with the second structure of so3.

so3 formal charge

You can see, sulfur has more then 6 electron, it has 12 electron around the sulfur. therefore, all the bonds around the sulfur is double bonds. sulfur has 3 double bonds and it has 12 valence electrone.

In this structure non bonding is not persent around the sulfur or around the central atoms. it mean, there are no any non bonding around the sulphur.

sulfur has 3 double bonds and it has 12 valence electrone.

Sulfur make 3 double bond according to sharing electrons from oxygen atoms. sulfur has 3 double bonds and it has 12 valence electrone as shown in figure.

bonding electrone – 3 double bond around the sulfur atoms. so, they make 12 valence electrone.

Now, we will find the formal charge of SO3 by using this formula.

Formal charge = valence electrone – non bonding valence electrone – bonding electrone/2

Now, first we will find formal charge of sulfur (S)

S = 6 – 0 – 12/2 = 0

(S) = 0

So, the formal charge of sulfur is 0.

Now, we will find (O)

O = 6 – 4 – 4/2 = 0

(O) = 0

So, the formal charge of Oxygen is 0.

So, the entire so3 molecules has zero formal charge.

therefore, we can say that the overall formal charge of so3 molecules are zero.

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