Question

A poisonous chemical element that is dark grey

Answer 1

[AI-generated answer — Bot GPT 3.5]

The element you are referring to is likely thallium (Tl). Thallium is a heavy metal element with a dark grey appearance. It is highly toxic and can be absorbed through inhalation, ingestion, or contact with the skin. Thallium compounds were historically used as rat poisons and insecticides, but their use has been restricted due to their extreme toxicity.