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Data sources

Atomic weights

Atomic weights of the elements 2013 (IUPAC Technical Report), Juris Meija, Tyler B. Coplen, Michael Berglund, Willi A. Brand, Paul De Bièvre, Manfred Gröning, Norman E. Holden, Johanna Irrgeher, Robert D. Loss, Thomas Walczyk and Thomas Prohaska

Pure Appl. Chem. 2016; 88(3): 265-291, doi: 10.1515/pac-2015-0305

The bibtex entry for the reference is:

@article { Atomicweightsoftheelements2013IUPACTechnicalReport,
      author = "Juris Meija and Tyler B. Coplen and Michael Berglund and Willi A. Brand and Paul De Bièvre and Manfred Gröning and Norman E. Holden and Johanna Irrgeher and Robert D. Loss and Thomas Walczyk and Thomas Prohaska",
      title = "Atomic weights of the elements 2013 (IUPAC Technical Report)",
      journal = "Pure and Applied Chemistry",
      year = "2016",
      publisher = "De Gruyter",
      address = "Berlin, Boston",
      volume = "88",
      number = "3",
      doi = "https://doi.org/10.1515/pac-2015-0305",
      pages= "265 - 291",
      url = "https://www.degruyter.com/view/journals/pac/88/3/article-p265.xml"
}

Details

The values for Element.mass were taken from the abridged standard atomic weights (Table 2), with the following exceptions:

  • When a range of atomic weights was presented, the value was taken from Table 3 (conventional atomic weights).
  • When an abridged standard atomic weight was not provided, the value was taken as the mass number of the longest-lived isotopes (Table 4).

These choices follow the convention used for the NIST periodic table.

Atomic radius

We provide two options for the van der Waals radius, the Bondi radii, and the Alvarez radii.

Bondi radii

The values were taken from Tables I and XIV of 1964 paper by Bondi. Values for Hg, Cd, and Zn came from Table I of the 1966 paper.

J. Phys. Chem. 1964; 68(3): 441-451, doi: 10.1021/j100785a001

J. Phys. Chem. 1966; 70(9): 3006-3007, doi: 10.1021/j100881a503

The bibtex entries are:

@article{Bondi:1964:JPhysChem,
  title={van der Waals volumes and radii},
  author={Bondi, A van},
  journal={The Journal of physical chemistry},
  volume={68},
  number={3},
  pages={441--451},
  year={1964},
  publisher={ACS Publications}
}
@article{Bondi:1966:JPhysChem,
  title={Van der Waals volumes and radii of metals in covalent compounds},
  author={Bondi, A},
  journal={The Journal of Physical Chemistry},
  volume={70},
  number={9},
  pages={3006--3007},
  year={1966},
  publisher={ACS Publications}
}

Alvarez radii

Values were taken from Table 1.

Dalton Trans. 2013; 42: 8617-8636, doi: 10.1039/C3DT50599E

The bibtex entry for the reference is:

@article{Alvarez:2013:Dalton,
author ="Alvarez, Santiago",
title  ="A cartography of the van der Waals territories",
journal  ="Dalton Trans.",
year  ="2013",
volume  ="42",
issue  ="24",
pages  ="8617-8636",
publisher  ="The Royal Society of Chemistry",
doi  ="10.1039/C3DT50599E",
url  ="http://dx.doi.org/10.1039/C3DT50599E",
}