Formal Charges
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8 Terms
1
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Bonding e-
e- involved in chemical bonding
2
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How do you determine the \# of bonds needed to complete the duet/octet rule?
Subtract the \# of valence e- by respective duet/octet rule (2 or 8)
3
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How many bonds are needed to fulfill the octet rule in nitrogen?
Valence e-: 5
8 - 5 = 3
8 - 5 = 3
4
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Which atoms are neutral?
FONCH
5
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What charge does a neutral atom have if its lone pair becomes a bond? (loses lone pair)
Positive
6
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What charge does a neutral atom have if its bond becomes a lone pair? (gains lone pair)
Negative
7
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What is the formula to find formal charge?
F.C. \= (valence e-) - (\# of non bonded e-) - (\# of bonds)
8
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Draw out and find the formal charge of H3O.
F.C. \= 6 - 2 - 3 \= +1
Note 
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