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Formal charge and orbital overlap

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by

Harvey Buckle

on 17 June 2016

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Transcript of Formal charge and orbital overlap

Formal charge and orbital overlap
Aim
HL To know hw to arrive at 'formal charge'
HL To know that bonding is the result of orbital overlap
SL/HL To demonstrate our understandings
OR...
Or, Formal charge is the difference between the number of valence electrons of each atom and the number of electrons the atom is associated with. Formal charge assumes any shared electrons are equally shared between the two bonded atoms.

E.g on Carbon Dioixde
With balloons
Red = S
Yellow = Px
Purple = Py
Orange = Pz
Starter
Draw what you thnk the CARBONATE ion looks like....
Formal Charge
In chemistry, a formal charge (FC) is the charge assigned to an atom in a molecule, assuming that electrons in all chemical bonds are shared equally between atoms, regardless of relative electronegativity.
Have a try...
See GC
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