Meaning of ARSENIC in English
Atomic number: 33
Atomic weight: 74.92160 (2)
Group in periodic table: 15
Group name: Pnictogen
Period in periodic table: 4
Block in periodic table: p-block
CAS registry ID: 7440-38-2
Elemental arsenic occurs in two solid modifications: yellow, and grey or metallic, with specific gravities of 1.97, and 5.73, respectively. The element is a steel grey, very brittle, crystalline, semimetallic (metalloid) solid. It tarnishes in air, and when heated rapidly oxidises to arsenous oxide which has a garlic odour.
Arsenic and its compounds are poisonous as any reader of "who-done-it" books knows. Upon heating arsenic and some minerals containing arsenic, it sublimes (transfers from the solid to the gaseous state, without passing through the liquid state).
Chemistry of the elements English vocabulary. Английский словарь химии элементов. 2012