The most important compound which accounts for almost 80% for the total depletion of ozone layer is:

Chlorofluorocarbon or CFC are chlorine containing compounds, which account for maximum degradation of the ozone layer. They are used as chemicals in various ways.

E.g. Freon, used in air-conditioners and refrigerators.

The other three options given have ions, and not compounds. So, they cannot be true.