Explanation:
(c)Syndiotactic polyvinylchloride
\(\left( { - C{H_2} - \mathop {\mathop {CH}\limits_{|\,\,\,\,\,\,\,} }\limits_{Cl\,\,\,} - C{H_2} - \mathop {\mathop {CH}\limits^{|\,\,\,\,\,\,} }\limits^{Cl\,\,} - C{H_2} - \mathop {\mathop {CH}\limits_{|\,\,\,\,} }\limits_{Cl\,} - C{H_2} - \mathop {\mathop {CH}\limits^{|\,\,\,\,\,} }\limits^{Cl\,\,\,} } \right.\)
\( - {\left. {C{H_2} - \mathop {\mathop {CH}\limits_{|\,\,\,\,\,\,} - }\limits_{Cl\,\,\,\,\,\,\,} } \right)_n}\)
In this arrangement the chlorine atoms are alternately arranged. The polymer is stereoregular and has high crystallinity.