Homework Answers
The formula of formal charge is:
Formal charge = [# of valence electrons] – [electrons in lone pairs + 1/2 the number of bonding electrons]
a) central O
# of valence electrons for O = 6
Formal charge =6 - (0 + 1/2 * 8)
= 6-4
= +2
b) right O
# of valence electrons for O = 6
Formal charge =6 - (6 + 1/2 * 2)
= 6-7
= -1
c) bottom O
# of valence electrons for O = 6
Formal charge =6 - (6 + 1/2 * 2)
= 6-7
= -1
d) C
# of valence electrons for C = 4
Formal charge =4 - (4 + 1/2 * 4)
= 4-6
= -2
Answer:
+2
-1
-1
-2
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the problems with a *, calculate the formal charge of the element
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