1. Editorial 65

   • Eric Scerri

   Editorial 22 June 2020 Pages: 135 - 136

2. Reporting the discovery of new chemical elements: working in different worlds, only 25 years apart

   • K. Brad Wray
   • Line Edslev Andersen

   OriginalPaper 03 October 2019 Pages: 137 - 146

3. 4D-cubic lattice of chemical elements

   • Haresh Lalvani

   OriginalPaper 14 December 2019 Pages: 147 - 194

   

4. Correction to: 4D-cubic lattice of chemical elements

   • Haresh Lalvani

   Correction 24 January 2020 Pages: 195 - 195

5. How Mendeleev issued his predictions: comment on Andrea Woody

   • Chris Campbell
   • Karoliina Pulkkinen

   OriginalPaper Open access 08 February 2020 Pages: 197 - 215

   

6. Organising the metals and nonmetals

   • René E. Vernon

   OriginalPaper Open access 05 February 2020 Pages: 217 - 233

   

7. Binódic periodic system: a mathematical approach

   • Julio Antonio Gutiérrez Samanez

   OriginalPaper 05 March 2020 Pages: 235 - 266

   

8. A nuclear periodic table

   • K. Hagino
   • Y. Maeno

   OriginalPaper Open access 21 April 2020 Pages: 267 - 273

   

9. Elements of chemistry

   • John Emsley

   Book Review 13 April 2020 Pages: 275 - 277

10. Structure, shape, topology: entangled concepts in molecular chemistry

    • Elena Ghibaudi
    • Luigi Cerruti
    • Giovanni Villani

    OriginalPaper 01 February 2019 Pages: 279 - 307

    

11. Conceptual confusion in the chemistry curriculum: exemplifying the problematic nature of representing chemical concepts as target knowledge

    • Keith S. Taber

    OriginalPaper Open access 26 September 2019 Pages: 309 - 334

12. A scale of atomic electronegativity in terms of atomic nucleophilicity index

    • Hiteshi Tandon
    • Tanmoy Chakraborty
    • Vandana Suhag

    OriginalPaper 30 January 2020 Pages: 335 - 346