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Question
How many energetically equivalent resonance structures exist for the oxalate dianion ?
How many energetically equivalent resonance structures exist for the oxalate dianion ?
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Solution
The correct option is A 1
4 energetically equivalent resonance structures exist for the oxalate dianion .
We have to calculate the number of electrons in π bonds by using formula :
P = 6n + 2 – V
Where,
n = 6 as C2O4-2 consists of six atoms.
V = (4 + 6 + 6 + 4 + 6 + 6) – ( - 2) = 34
P = 6n + 2 – V = 6 x 6 + 2 – 34 = 4
4 energetically equivalent resonance structures exist for the oxalate dianion .
We have to calculate the number of electrons in π bonds by using formula :
P = 6n + 2 – V
Where,
n = 6 as C2O4-2 consists of six atoms.
V = (4 + 6 + 6 + 4 + 6 + 6) – ( - 2) = 34
P = 6n + 2 – V = 6 x 6 + 2 – 34 = 4
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