שאלה | Which of the following statements is true about monomer orientation as it adds to the propagating chain in the radical polymerization of mono-substituted vinyl compounds (H2C=CHR where R is a group or atom such as benzene, nitrile, chloride)? (Choose from the following four possibilities)

Which of the following statements is true about monomer orientation as it adds to the propagating chain in the radical polymerization of mono-substituted vinyl compounds (H2C=CHR where R is a group or atom such as benzene, nitrile, chloride)? (Choose from the following four possibilities)

		Resonance stabilization of the forming radical favors head-to-tail addition
		Resonance stabilization of the forming radical favors head-to head addition
		Steric or electrostatic repulsion between the R groups on the monomer and growing chain end, have little or no influence on the head-to-tail vs. head-to head addition
		None of the above