שאלה | Free radical polymerization of some vinyl polymers can give polymer chains with syndiotactic placement of monomers in the chain, under which of the following conditions, (Choose from the following four possibilities)

Free radical polymerization of some vinyl polymers can give polymer chains with syndiotactic placement of monomers in the chain, under which of the following conditions, (Choose from the following four possibilities)

		if the free radical growing chain end has a cationic counter ion.
		If the initiation step is done at high temperatures.
		If the vinyl monomer has a large group on both carbons (e.g., CR'H=CHR) of the vinyl group and if the free radical polymerization is carried out at low temperature.
		If the vinyl monomer has a relatively large head group R on one head group (e.g., CH2=CHR) and if the free radical polymerization is carried out at low temperature.