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➤ It causes damage to nucleic acid structures and affects the formation of various types of carcinomas.

➤ Dermatologic diseases, development of viral hepatitis A and bone diseases, and general weakness are observed.

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➤ It has been used in radiation therapy through the use of radioactive radiation, whose rays are directed to the sites of cancer cell development and ensure their destruction.

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➤ Causes radiation burns, damage to the chemical structure of DNA and the development of cancer.

➤ Antidote: oxygen inhalation.

➤ In the process of working on the discovery of Ra, the Curie couple discovered:

A) the given radioactivity is due to radium;

B) the impact of radiation on chemical processes;

C) the glow effect of radioactive drugs.

➤ In 1902, the Curie couple obtained the first decigram (0.1 g) of pure radium chloride.

➤ On the basis of the study of Ra properties, E. Rutherford and F. Soddy formulated the law of radioactive transformations.

➤ In 1910. Curie and Debierne obtained metallic Ra by electrolysis of an aqueous solution of RaCl_2.