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You have searched the English word "Radium" meaning in Arabic "الراديوم". Radium meaning has been search 532 (five hundred and thirty-two) times till 12/22/2014. You can also find Radium meaning and Translation in Urdu, Hindi, Arabic, Spanish, French and other languages.

Radium Meaning in Arabic

English to Arabic Arabic to English
English العربية
Radium  
الراديوم
Definition & Synonyms
• Radium
  1. (n.) An intensely radioactive metallic element found (combined) in minute quantities in pitchblende, and various other uranium minerals. Symbol, Ra; atomic weight, 226.4. Radium was discovered by M. and Mme. Curie, of Paris, who in 1902 separated compounds of it by a tedious process from pitchblende. Its compounds color flames carmine and give a characteristic spectrum. It resembles barium chemically. Radium preparations are remarkable for maintaining themselves at a higher temperature than their surroundings, and for their radiations, which are of three kinds: alpha rays, beta rays, and gamma rays (see these terms). By reason of these rays they ionize gases, affect photographic plates, cause sores on the skin, and produce many other striking effects. Their degree of activity depends on the proportion of radium present, but not on its state of chemical combination or on external conditions.The radioactivity of radium is therefore an atomic property, and is explained as result from a disintegration of the atom. This breaking up occurs in at least seven stages; the successive main products have been studied and are called radium emanation or exradio, radium A, radium B, radium C, etc. (The emanation is a heavy gas, the later products are solids.) These products are regarded as unstable elements, each with an atomic weight a little lower than its predecessor. It is possible that lead is the stable end product. At the same time the light gas helium is formed; it probably consists of the expelled alpha particles. The heat effect mentioned above is ascribed to the impacts of these particles. Radium, in turn, is believed to be formed indirectly by an immeasurably slow disintegration of uranium.


Synonyms:
Ra,
More Languages
Radium in Urdu (دھاتی عنصر)

Radium in Arabic (الراديوم)

Radium in Hindi (रेडियम)

Radium in Spanish (radio)

Radium in French (radium)

Radium in German (Radium)

 
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