X = number of resonance structures contributing to the resonance hybrid of
Y = number of resonance structures contributing to the resonance hybrid of
Find the sum X + Y.

Question

X = number of resonance structures contributing to the resonance hybrid of Y = number of resonance structures contributing to the resonance hybrid of Find the sum X + Y.

TestHub · Accepted Answer

Phenoxide : 2 Kekule forms + 3 forms with the charge on ortho, ortho and para carbons = 5. X = 5.

In $C_{6} H_{5} C F_{3}$ the $C F_{3}$ group has no lone pair or pi bond to conjugate, so only 2 Kekule forms. Y = 2.

X + Y = 7.

Chemistry - GOC Question with Solution | TestHub

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