How many energetically equivalent resonance structures exist for the o

1.	How many energetically equivalent resonance structures exist for the oxalate dianion?
Answer» etically 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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