Structures ________, shown below, are resonance structures, and structure ________ is the major contributor to the overall resonance hybrid.
A) 2 & 4; 2
B) 1, 3 & 5; 3
C) 4 & 6; 6
D) 1, 3 & 5; 1
E) 1, 3, 4 & 5; 3

Question

Structures ________, shown below, are resonance structures, and structure ________ is the major contributor to the overall resonance hybrid. 
A) 2 & 4; 2 
B) 1, 3 & 5; 3 
C) 4 & 6; 6 
D) 1, 3 & 5; 1 
E) 1, 3, 4 & 5; 3

Quizplus · Accepted Answer

Structures 1, 3 and 5 are resonance structures because they have the same arrangement of atoms and only differ in the placement of the double bonds. Structure 3 is the major contributor to the resonance hybrid because it has the greatest number of covalent bonds and formal charges closest to zero.

Structures ________, Shown Below, Are Resonance Structures, and Structure ________

Structures , Shown Below, Are Resonance Structures, and Structure