שאלה | 1) In free radical chain reaction polymerization of vinyl monomers, the rapid growth to high polymer molecular weight (MW) even at a low level of the total concentration of monomers polymerized, is due to which of the following? (Choose from the following four possibilities)

1) In free radical chain reaction polymerization of vinyl monomers, the rapid growth to high polymer molecular weight (MW) even at a low level of the total concentration of monomers polymerized, is due to which of the following? (Choose from the following four possibilities)

		No initiator is initially needed and the vinyl groups in the monomers can initially react throughout the reaction solution to give a high MW
		There is no termination step and thus a high molecular weight is formed
		A high initiator concentration resulting in a high concentration of initiated polymer chains and thus high molecular weight
		Growth occurs by the rapid addition of monomers to a limited number of growing chain ends.