arsenic

Arsenic is a chemical element with the symbol As and atomic number 33. It is a naturally occurring element that is found in rocks, soil, and water. Arsenic is a metalloid, which means that it has properties of both metals and nonmetals.

Arsenic is a highly poisonous element, and it can be harmful to humans if it is ingested or inhaled. Symptoms of arsenic poisoning can include nausea, vomiting, diarrhoea, headache, and seizures. In severe cases, arsenic poisoning can be fatal.

Arsenic has been used for centuries as a poison, and it was once used in some medicines. However, arsenic is no longer used in medicines because of its toxicity.

Arsenic is also used in some industrial applications, such as making glass and semiconductors. However, the use of arsenic in these applications is being phased out due to concerns about its toxicity.

Arsenic is a chemical element.