CHEM 232 Exam 1 with 100% Correct Answers

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CHEM 232 Exam 1 with 100% Correct Answers

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2026/2027

Institution CHEM 232

Course CHEM 232

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CHEM 232 Exam 1 with 100% Correct Answers

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CHEM 232 Exam 1 with 100% Correct
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sigma bond - ANS-head on overlap

pi bond - ANS-side by side overlap (always formed with p orbitals)

bond order - ANS-reflects the strength of a bond

resonance - ANS-electron delocalization by shifting pi bonds and lone pairs

conjugation - ANS-electron delocalization by overlapping p orbitals

criteria for conjugated systems - ANS-composed of 3 or more p orbitals, p orbitals must
be on adjacent atoms, p orbitals must be aligned (parallel pi bond alignment)
enantiomerically pure - ANS-EE=1

racemate - ANS-E=0 (optically inactive)

nodes - ANS-where phase switches, more nodes = more energy

criteria for aromatic systems - ANS-requires a fully conjugated cyclic system and the
ring is flat

huckel's rule - ANS-aromatic systems contain 4n+2 pi electrons where n is any positive
integer

criteria for nonaromatic compounds - ANS-not cyclic, not fully conjugated, not flat or p
orbitals not aligned

empirical resonance energy - ANS-a value for the stabilization due to electron
delocalization

frost circles - ANS-draw circle, inscribe polygon with vertex pointing down, put mo at
each vertex, bisect circle (all MOs below are bonding, above are antibonding), fill
orbitals with pi electrons

antiaromatic criteria - ANS-cyclic conjugated system, flat ring, contains multiple of 4n pi
electrons

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Uploaded on: August 1, 2026
Number of pages: 4
Written in: 2026/2027
Type: Exam (elaborations)
Contains: Questions & answers

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