User:Sandbh

Source: Wikipedia, the free encyclopedia.
Paris Street; Rainy Day, by Gustave Caillebotte (1870)
The Shop of the Bookdealer Pieter Meijer Warnars on the Vijgendam in Amsterdam, by Johannes Jelgerhuis (1820)
Copernicus, or Conversations with God, by Jan Matejko
(1873)

We choose [these things], not because they are easy, but because they are hard, because [they] will serve to organize and measure the best of our energies and skills

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Wikipedia articles

Astatine Heavy metals Metalloid


Publications etc

Last updated Oct 6

2013 Which elements are metalloids? Journal of Chemical Education. 90, 12, 1703–1707,
doi:10.1021/ed3008457. Citations: 64
; Views: 2,319
2017 Group 3 for IUPAC: I. User:Sandbh/Group 3, lodged Jan 11th
2018 Iyer S.: As sesquicentennial occurs, debate on arrangement of periodic table continues. Daily Bruin. November 21st, with quotations and contributions from Eric Scerri, PJ Stewart, and RE Vernon
2019 Reader comment, Miller JS 2019, Viewpoint: Metalloids—An electronic band structure perspective. Chemistry: A European Journal. 25, 48, 11177,
2019 Group 3 for IUPAC: II, lodged Oct 11th
2020 Organising the metals and nonmetals. Foundations of Chemistry. 22, 2, 217−233. Accesses: † 20,121; citations: 7
2020 The location and composition of Group 3 of the periodic table. Foundations of Chemistry. 23, 2, 155–197, Accesses: † 18,632; citations: 19
2020 Cao C, Vernon RE, Schwarz WEH, & Li J, Understanding periodic and non-periodic chemistry in periodic tables. Frontiers in Chemistry. Accesses: 18,815; ‡ citations: 26
2021 Group 3 for IUPAC: III, lodged November 3rd
2022 ACS Spring Technical Program, March 23, "Which elements are metals and nonmetals(?)", virtual presentation,
2023 Hydrogen over helium: A philosophical position (in press) 354 views; 346 downloads
2023 The location and composition of Group 3: A follow-on examination 260 views; 293 downloads; 10 recommendations§
2024 Organising the metals and nonmetals: An update (forthcoming)
ongoing Internet database of periodic tables, 126 contributions

† 

Researchgate

‡ 
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In progress

On the bench in my workshop

Wikipedia related

  •  Essay: A young person’s guide to 1RY, 2RY, and 3RY sources

Chemical elements related

Eh?

Under a dustcover

  •  Drawing lines on the periodic table
  •  Representative and transition element group names
  •  The periodic table family tree; the n, n + 10 relationship; and Group 3

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