{
  "name": "Share of a hydrogen atom's electron inside six chosen edges",
  "desc": "Six radii for hydrogen, from the 25 pm empirical radius to the 222 pm that holds 99% of the electron, with the share of a free ground-state atom's electron inside each.",
  "lic": "CC BY 4.0",
  "lic_url": "https://creativecommons.org/licenses/by/4.0/",
  "by": "Ants, Cells & Atoms",
  "url": "https://antscellsandatoms.com/scale/atom-size/",
  "from": [
    "PubChem element record 1, Atomic Radius section (saved response, 2026-10-25)",
    "CODATA 2022 Bohr radius (saved constant page, 2026-10-25)",
    "Stamopoulos D 2025, Materials 18(10):2344, relation 46: hydrogen ground-state wavefunction (saved full text, 2026-10-25)",
    "Wikipedia, Van der Waals radius, comparison table, Bondi column (saved page, 2026-10-25; used only to attribute the hydrogen value)"
  ],
  "how": "Compiled by Ants, Cells & Atoms from the data listed",
  "data_by": [
    "CODATA 2022, Bohr radius 5.29177210544e-11 m, https://physics.nist.gov/cgi-bin/cuu/Value?bohrrada0 (retrieved 2026-10-25)",
    "hydrogen radii from PubChem element record 1 (Hydrogen), PubChem 2025 update, https://doi.org/10.1093/nar/gkae1059 (retrieved 2026-10-25); the van der Waals value is Bondi's, Bondi A 1964, The Journal of Physical Chemistry 68(3):441–451, https://doi.org/10.1021/j100785a001 (bibliographic record; as tabulated in Wikipedia, Van der Waals radius, read 2026-10-25)",
    "density cutoff as used by Rahm M, Hoffmann R, Ashcroft NW 2016, Chemistry – A European Journal 22(41):14625–14632, https://doi.org/10.1002/chem.201602949 (abstract; retrieved 2026-10-25)",
    "shares computed 2026-10-25 for this page from the hydrogen ground-state wavefunction as given in Stamopoulos D 2025, Materials 18(10):2344, CC BY 4.0, https://doi.org/10.3390/ma18102344 (relation 46; retrieved 2026-10-25)"
  ]
}