Answer. Butane exists as n-butane and isobutene. Different structures of butyl radicals are explained
Removal of terminal H→ CH3-CH2-CH2- n-butyl
H
CH3-CH2-CH2-CH2 │
Butane Removal of central H→ CH3—C― CH2―CH3 sec-butyl
│
CH3
│
CH3 Removal of terminal H→ CH3-CH2-CH2- isopropyl
│ H
CH3―CH2―CH3 │
isobutane Removal of central H→ CH3—C―CH3
I
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