Unit 2 Topic 6: Resonance & Formal Charge

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4 Terms

1
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Resonance structures

2 or more lewis electron-dot structures which both represent correct structures for a molecule

2
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Formal Charge

A way of assigning a charge to each individual atom in a molecule; in a neutral molecule the most stable condition for each atom is to have a formal charge of zero

3
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Formal charge formula

[# of valence electrons of an element] - [# of assigned valence electrons to the element in the lewis-dot structure] = formal charge

Each dot count as one and bond count as one

4
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Find the formal charge of SO2 

Oxygen on the left: 6- 6 = 0
Sulfur: 6 - 5 = 1
Oxygen on the right: 6-7 = -1

<p>Oxygen on the left: 6- 6 = 0<br>Sulfur: 6 - 5 = 1<br>Oxygen on the right: 6-7 = -1</p>