There are four pi electrons in this molecule. In their ground state, π1 and π2 each have two electrons, while π3* and π4* are vacant. The HOMO is π2 and the LUMO is π3*.
Question : Natural rubber is the polymer of:
Option 1: Isoprene
Option 2: Styrene
Option 3: Butadiene
Option 4: Ethylene
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