7 found
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  1.  28
    Isodiagonality in the Periodic Table.Geoff Rayner-Canham - 2011 - Foundations of Chemistry 13 (2):121-129.
    Diagonal relationships in the periodic table were recognized by both Mendeléev and Newlands. More appropriately called isodiagonal relationships, the same three examples of lithium with magnesium, beryllium with aluminum, and boron with silicon, are commonly cited. Here, these three pairs of elements are discussed in detail, together with evidence of isodiagonal linkages elsewhere in the periodic table. General criteria for defining isodiagonality are proposed.
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  2.  40
    The Chemical ‘Knight’s Move’ Relationship: What is its Significance? [REVIEW]Geoff Rayner-Canham & Megan Oldford - 2007 - Foundations of Chemistry 9 (2):119-125.
    Similarities in properties among pairs of metallic elements and their compounds in the lower-right quadrant of the Periodic Table have been named the ‘Knight’s Move’ relationship. Here, we have undertaken a systematic study of the only two ‘double-pairs’ of ‘Knight’s Move’ elements within this region: copper-indium/indium-bismuth and zinc-tin/tin-polonium, focussing on: metal melting points; formulas and properties of compounds; and melting points of halides and chalcogenides. On the basis of these comparisons, we conclude that the systematic evidence for ‘Knight’s Move’ relationships (...)
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  3.  33
    Periodic Patterns: The Group (N) and Group (N + 10) Linkage. [REVIEW]Geoff Rayner-Canham - 2013 - Foundations of Chemistry 15 (2):229-237.
    The early Periodic Tables displayed an 8-Group system. Though we now use an 18-Group array, the old versions were based on evidence of similarities between what we now label as Group (n) and the corresponding Group (n + 10). As part of a series on patterns in the Periodic Table, in this contribution, these similarities are explored for the first time in a systematic manner. Pourbaix (Eh–pH) diagrams have been found particularly useful in this context.
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  4.  26
    Isoelectronic Series: A Fundamental Periodic Property. [REVIEW]Geoff Rayner-Canham - 2009 - Foundations of Chemistry 11 (2):123-129.
    The usefulness of isoelectronic series (same number of total electrons and atoms and of valence electrons) across Periods is often overlooked. Here we show the ubiquitousness of isoelectronic sets by means of matrices, arrays, and sequential series. Some of these series have not previously been identified. In addition, we recommend the use of the term valence-isoelectronic for species which differ in the number of core electrons and pseudo-isoelectronic for matching (n) and (n + 10) species.
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  5.  47
    Naming Elements After Scientists: An Account of a Controversy. [REVIEW]Geoff Rayner-Canham & Zheng Zheng - 2008 - Foundations of Chemistry 10 (1):13-18.
    Over the last two hundred years, there have been many occasions where the name of a newly-discovered element has provoked controversy and dissent but in modern times, the naming of elements after scientists has proved to be particularly contentious. Here we recount the threads of this story, predominantly through discourses in the popular scientific journals, the first major discussion on naming an element after a scientist ; the first definitive naming after a scientist ; and the first naming after a (...)
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  6.  60
    Anne-Marie Weidler Kubanek: Nothing Less Than an Adventure: Ellen Gleditsch and Her Life in Science: Crossfield Publishing, Montreal, Canada, 2010, 185pp, ISBN 1452842132, EAN 13 9781452842134. [REVIEW]Marelene Rayner-Canham & Geoff Rayner-Canham - 2011 - Foundations of Chemistry 13 (3):251-252.
    Anne-Marie Weidler Kubanek: Nothing less than an adventure: Ellen Gleditsch and her life in science Content Type Journal Article Category Book Review Pages 1-2 DOI 10.1007/s10698-011-9119-8 Authors Marelene Rayner-Canham, Memorial University, Grenfell Campus, Corner Brook, NL, Canada Geoff Rayner-Canham, Memorial University, Grenfell Campus, Corner Brook, NL, Canada Journal Foundations of Chemistry Online ISSN 1572-8463 Print ISSN 1386-4238.
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  7.  23
    Relationships Among the Transition Elements.Geoff Rayner-Canham - 2011 - Foundations of Chemistry 13 (3):223-232.
    As part of a series of contributions on patterns in the periodic table, the relationships among the transition metals are examined here in a systematic manner. It is concluded that the traditional method of categorizing transition elements by group or by period is not as valid as by using combinations thereof. From chemical similarities, it is proposed that the transition metals be considered as the [V–Cr–Mn] triad; the [Fe–Co–Ni–Cu] tetrad; the [Ti–Zr–Hf–Nb–Ta] pentad; the [Mo–W–Tc–Re] tetrad; and the [Ru–Os–Rh–Ir–Pd–Pt–Au] heptad. Silver (...)
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