The degree of cystallinity of which of the following is highest

Options

A. Atactic polyvinylchloride
B. Isotactic polyvinylchloride
C. Syndiiotactic polyvinylchloride
D. All of these

Answer

C

Explanation

Syndiotatic polyvinychloride
`(-CH_(2)-underset(Cl)underset(|)CH-CH_(2)-overset(Cl)overset(|)CH-CH_(2)-underset(Cl)underset(|)CH-CH_(2)-overset(Cl)overset(|)CH-underset(Cl)underset(|)HC-overset(|)CH_(2))_(n)`
In this arrangement the chlorine atoms are alternately arranged. The polymer is stereogular and has high crystallinity.