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Which consequence results when electron pairing is incomplete during polymerization?

A)Diradicals form causing chain branching
B)Polymerization rate spontaneously accelerates
C)Average molecular weight is unaffected
D)Stereoregularity of the polymer increases

💡 Explanation

Diradical formation gives two unpaired electrons because the **Hund's rule** favors maximizing spin multiplicity. Therefore, radical intermediates readily couple with adjacent chains, forming branched polymer architectures, rather than causing chain propagation or enhancing stereocontrol.

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