1.

Which of the following is a syndiotactic polymer in [-CH_(2)-C(YZ)-]_(n)

Answer»

All Y GROUPS lie on one side of the chain and all Z groups on the other side
The Y and Z group lie alternately on each side of the chain
The Y and Z group are arranged in a random fasion
Y and Z group are same

Solution :There are 3 stereo chemical arrangement are possible
(i) ISOTACTIC (same order) :- Here group are arranged on one side of the chain. All y groups lie on one side and all Z groups on the oppsitie side of the chain

(II) Syndiotactic (alternating order) -The Y and Z group lie alternately on each side of the chain

(III) Atactic (Random order) -The Y and Z groups are arranged in random FASHION


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