What toxic element is commonly used in rechargeable batteries that can contaminate soil and water if disposed of in the trash?

a. cadmium

b. hydrogen

c. iron

Cadmium is an element that is used in "rechargeable batteries". It is highly toxic in nature which is a hazardous water and soil pollutant.

Explanation:

Cadmium is commonly used in the manufacturing of "Nickel-Cadmium rechargeable batteries". It has the ability to strongly absorbs the organic matter in water and make it highly toxic within no time. Prolonged exposure to cadmium is hazardous enough to cause serious disease like cancer and other cerebral diseases.

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