RADIUM
The element radium is represented by the symbol "Ra". It is located in the seventh period of group 2A of the periodic table and has atomic number 88. It is the heaviest of the alkaline earth metals.
It is solid at room temperature. The feature of emitting lethal rays penetrating continuously is called "radioactivity". Radium, which is a radioactive element, is also silvery, shiny and soft.
Radium was discovered in 1898 by Marie Curie and her husband Pierre Curie. These two scientists are trying to find and decompose the Uranite residue by going through various processes. Since the damages of radioactivity were unknown at that time, they do these processes without taking the necessary precautions. Marie Curie named the first element they found from this uranite residue Polonium, inspired by the name of their homeland, and the element they found later, which they could only obtain 1 mg, was called Radium, meaning "radiant". In addition, Marie Curie became the first woman to win a Nobel Prize for her work on radium, and the first person to win a Nobel Prize twice.
Radium is an element with 1 million times more radioactivity than uranium. Due to its spontaneous light emission in the first years of its discovery; It has been used in paints of watch dials, toothpastes, water, chocolates and more. Consequently, it has brought many diseases and deaths. There were deaths due to radium from the 1920s until the 1970s. Women factory workers who suffered from radiation poisoning from painting watch dials with paint containing radium spontaneously were called "Radium Girls" in history.
http://tr.wikipedia.org/
http://www.fmo.org.tr/
http://evrimagaci.org/
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