In each structure below draw in the hydrogen that is most likely to be abstracted in a homolytic cleavage:

$3$a$.$ Circle the radical that is not a resonance form that would result from homolysis of the weakest $C-H$ bond

in the diene shown in the box below:

$3$b$.$ Draw the resonance hybrid of the radical that forms from the homolysis reaction indicated in the box in part

$3$a above:

Rank the following carbon radicals in order of stability from least to most stable:

Kank the indicated $C-H$ bonds in the compound below based on the rate at which the hydrogen atom would

be abstracted by a radical initiator:

Product Prediction:

$Mg$

Cul $(0\mathrm{.}5$ equiv.$)$