16. Conjugated Systems
HOMO LUMO
Multiple Choice
Multiple Choice
In the first step of the mechanism of alkene hydrobromination, which of the following orbitals is the LUMO?
![The figure illustrates a reaction. The reaction contains two reactants and one product. The first reactant has the following structure: A 3-carbon alkene chain is depicted as a line structure using 2 zigzag lines. A double bond is present between C 2 and C 3. The second reactant is H B r written over the reaction arrow. The product has the following structure: A 3-carbon alkane chain is depicted as a line structure using 2 zigzag lines. C 2 is single bonded to B r above.](https://media.pearsoncmg.com/ph/esm/ecs_mullins_organic1e/msa/content/practice-test/img/Ch22_Q02_QT.jpg)
A
C=C π
B
Br- sp3
C
H–Br σ*
D
C+ p
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