An alternating copolymer is known to have a number$-$average molecular weight of $146100\frac{g}{m}ol$ and a degree of polymerization of $2210.$ If one of the repeat units is ethylene, which of styrene, propylene, tetrafluoroethylene, and vinyl chloride is the other repeat unit?

Click here to access Table $14\mathrm{.}3.$

Atomic weights for several elements are included in the following table:

Carbon $,12\mathrm{.}01\frac{g}{m}ol$

Chlorine $,35\mathrm{.}45\frac{g}{m}ol$

Fluorine $,19\mathrm{.}00\frac{g}{m}ol$

Hydrogen $,1\mathrm{.}008\frac{g}{m}ol$

Oxygen $,16\mathrm{.}00\frac{g}{m}ol$

Nitrogen $,14\mathrm{.}01\frac{g}{m}ol$

Tetrafluoroethylene

Styrene

Propylene

Vinyl chloride