# What is the formal charge of SO2?

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The formal charge on the

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You can draw three Lewis structures for

The actual structure is therefore a resonance hybrid of all three structures.

In calculating the formal charge, each atom "gets" all of its lone pair electrons and half of its bonding electrons.

The formal charge is then the difference between the calculated number and the number of valence electrons in the isolated atom.

Let's look at each of the contributors.

**The left hand structure**

Here, the formal charge on each atom is zero.

**The other two structures**

In every structure, the formal charge on

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