As=ARSENIC
Arsenic is a poisonous metalloid. It sometimes occurs in native state. Like other metalloids, it takes multiple forms. The pure element may be a gray, black, yellow, or metallic solid at room temperature.
Arsenic is a poisonous metalloid. It sometimes occurs in native state. Like other metalloids, it takes multiple forms. The pure element may be a gray, black, yellow, or metallic solid at room temperature.