A heavy ion represents any ion that can be made from any element on the Periodic table by stripping away its electrons and hurling it through space at a given velocity.
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Chemical Galaxy is a new representation by Philip Stewart of the periodic system of the elements, better known in tabular form as the periodic table, based on the cyclical nature of characteristics of the chemical elements (which depend principally on the valence electrons).
Gerhard Krüss and F. W. Schmidt thought that existence of this element would solve an apparent problem in the periodic table.
Chemikus, localized to Chemicus for the English-speaking market, attempts to teach chemistry by exploring a land whose rooms are linked by an underground railway whose controls are in the form of the periodic table of the elements.
(1) In general, whatever the total number of constituent atomic valence electrons, data for isoelectronic molecules tend to be more similar than for adjacent molecules that have more or fewer valence electrons; for triatomic molecules, the electron count is the sum of the atomic group numbers (the sum of the column numbers 1 to 8 in the p-block of the periodic chart of the elements, C1+C2+C3).
He is known for his work on the The Periodic Table of Videos, a series of videos from the University of Nottingham presented on YouTube, which feature educational vignettes on the periodic table.
Games such as Tetris and Boulder Dash are available, as are programs with more practical uses, such as versions of the periodic table.
Primo Levi in his novel The Periodic Table in chapter Nitrogen considers pythons as a source for alloxane on behalf of a lipstick producer but he is turned down by the director of the Turin zoo because the zoo already has lucrative contracts with cosmetics companies.
Nevertheless, in spite of Rutherford's estimation that gold had a central charge of about 100 (but was element Z = 79 on the periodic table), a month after Rutherford's paper appeared, Antonius van den Broek first formally suggested that the central charge and number of electrons in an atom was exactly equal to its place in the periodic table (also known as element number, atomic number, and symbolized Z).
Boron, the (modern) element with atomic number 5 on the periodic table
After the war, as a result of the world’s first hydrogen bomb explosion on a Pacific atoll in 1952, Huizenga was part of the team that added two new synthetic chemical elements einsteinium and fermium to the Periodic table.
— Georgy Flyorov — 16 October 1968 — "New elements of the periodic table, prospects and problems of chemical search of superheavy elements"
Neutronium, hypothetically occupying Period 0 in the periodic table