periodic spiral is a unique redesign of the mendeleyevian periodic table that's both powerful and easy to use. in conventional versions of the periodic table, the lanthanons and actinons are poorly integrated, and the alternating placements of hydrogen neither effectively convey the element's unique status nor indicate its chemical similarities to the noble gases, halogens, and alkali metals. periodic spiral illustrates hydrogen's ambiguous relationship, while also fully integrating the lanthanons and actinons into the design. in addition it features a complete set of 120 elementsð-including postulated elements such as 115ð-with comprehensive information on each from 12 categories that include history, associations, geology, compounds, alloys, and form. with more than 600 pages of text, no other reference source provides instant access to such a wealth of information about the chemical elements.
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