Arsenic

Of element, insecticide, herbicide, arsenopyrite, orpiment and realgar.   May also be referred to as As and atomic number 33.

A very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar.

This concept's ID is @1~73885