# Third-Party Notices

## Element data: Periodic-Table-JSON

The element property values used by this site (atomic number, symbol, name,
relative atomic mass, category, period/group/block, electron configuration,
electronegativity, density, melting and boiling points) are compiled from the
open dataset

- **Periodic-Table-JSON** — https://github.com/Bowserinator/Periodic-Table-JSON
  (dataset compiled from public sources, including Wikipedia)

Only factual property values are embedded; no text passages, images or
summaries from that repository are copied. Scientific facts are not
copyrightable, but out of respect for the data's provenance the following
information is recorded here.

The repository's `LICENSE.md` applies the **Creative Commons
Attribution-ShareAlike 3.0 Unported** license
(https://creativecommons.org/licenses/by-sa/3.0/) to its content, as cited
from Wikipedia:

> This work is licensed under a Creative Commons Attribution-ShareAlike 3.0
> Unported License. You are free to Share and Remix the work under the terms
> of Attribution and ShareAlike.

MolBay embeds this data for informational/educational use with attribution as
above. The MolBay site code itself is MIT-licensed (see LICENSE).

Mass convention: values shown are mean relative atomic masses in g/mol; for
elements without a stable isotope the mass of the longest-lived isotope is
used. Element name translations (zh-CN, zh-TW, ko, fr, es) follow the official
naming conventions of the respective standards bodies (IUPAC Chinese/Taiwan
element-name lists, Korean Chemical Society, IUPAC French/Spanish
translations).