The same is the fact that before a note on a new radioactive substance in the composition of uraninite "* appeared in the Proceedings of the Academy of Sciences, Marie had sent the manuscript to his homeland, to Joseph Bogusskomu, head of the laboratory of the Museum of Industry and Agriculture, which began its first scientific experiments. The report was published in the Swialto, a monthly illustrated review, almost simultaneously with the publication in Paris. " * Mineral uranium, its composition UO2. Curies explored different uranium-bearing minerals. Why radium and polonium not? In fact, why radium and polonium are not brought the Curies worldwide fame? After the first element, open them, there was an element number 84. After a year they had no doubt that pitchblende contains two new element.
But these elements are allowed to know about yourself only radioactivity, and to convince everyone, and especially the chemists, that the opening does occur, it was necessary to highlight these activities, learn new elements at least in the form of individual compounds. All radioactive elements and isotopes are known, are now united in the family: the decay, the nucleus of the radioactive atom into a nucleus of another child element. All elements of the radioactive families are together in a certain equilibrium. Measured in uranium ores equilibrium ratio of uranium to polonium is 1.9 1010, and in equilibrium with a gram of radium, polonium found 0,2 mg. This means that uranium minerals radium almost 20 billion times smaller than that of uranium, and polonium in 5 thousand times smaller.