A python package for accessing various properties of elements, ions and isotopes in the periodic table of elements.

Scientists have found that our bodies need 28 different elements to function properly. These are almost one-quarter of the periodic table and are mainly found in the first four periods.

1. Periodic Table as Arranged by Mendelejeff attention to the fact that “the eighth element, starting from a given one, is a kind of repetition of the first, like the eighth note of an octave in ...

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The success of the bold speculations of Mendeleef permits the affirmation that the elaboration of the periodic ... New elements have come to fill the vacant spaces in his table, and there is ...

IN 1940, we prepared the isotope of mass 211 of element 85 by bombarding bismuth with alpha particles accelerated in the 60-in. cyclotron of the Radiation Laboratory of the University of California 1.

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propagation of electro-magnetic waves along periodic circuits and filtering properties of such systems.

Over the next 400 million years, global diversity showed little overall trend and was marked by periodic, massive losses of diversity classified as mass extinction events. The largest of these ...