Poly(chloroethene) (PVC) is made from the monomer chloroethene, which has the formula C_2H_3Cl. Which statement correctly describes the structure and bonding in PVC?

It is a long‑chain covalent polymer formed by addition of many chloroethene molecules.

It is an ionic lattice made of C_2H_3^+ and Cl^- ions.

It is a simple molecular substance made of small C_2H_3Cl molecules only.

It is a metallic structure with delocalised electrons between carbon atoms.

CH-1402

Addition polymerisation

Chemistry · Secondary 4 · Hard · Addition polymerisation

Poly(chloroethene) (PVC) is made from the monomer chloroethene, which has the formula C

_2

_3

Cl.

Which statement correctly describes the structure and bonding in PVC?

It is a long‑chain covalent polymer formed by addition of many chloroethene molecules.
It is an ionic lattice made of $C_2H_3^+$ and Cl $^-$ ions.
It is a simple molecular substance made of small C $_2$ H $_3$ Cl molecules only.
It is a metallic structure with delocalised electrons between carbon atoms.

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