A-LevelChemistryHydrocarbons9701/12 · May/June 2010 · Q251 Mark
When heated with chlorine, the hydrocarbon 2,2-dimethylbutane undergoes free radical substitution. In a propagation step the free radical X• is formed. [Figure 25 - Chemical structure of CH3CH2-C(CH3)2-CH3 and reaction showing X•] How many different forms of X• are possible?
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A1
B2
C3
D4
✓ Correct answer
C: 3
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