Meaning of RADIUM in English

RADIUM

Name: radium

Symbol: Ra

Atomic number: 88

Atomic weight: [ 226 ]

Group in periodic table: 2

Group name: Alkaline earth metal

Period in periodic table: 7

Block in periodic table: s-block

CAS registry ID: 7440-14-4

Pure metallic radium is brilliant white when freshly prepared, but blackens on exposure to air, probably due to formation of the nitride. It exhibits luminescence, as do its salts; it decomposes in water and is somewhat more volatile than barium. Radium imparts a carmine red colour to a flame.

Radium emits a, b, and g rays and when mixed with beryllium produces neutrons. Inhalation, injection, or body exposure to radium can cause cancer and other body disorders. alkaline earth metal, white but tarnishes black upon exposure to air, luminesces, decomposes in water, emits radioactive radon gas, disintegrated radioactively until it reaches stable lead, radiological hazard, a, b, and g emitter, exposure to radium can cause cancer and other body disorders. Radium is over a million times more radioactive than the same mass of uranium.

Chemistry of the elements English vocabulary.      Английский словарь химии элементов.