The offer of this page is free and ad-free. The source code can be viewed freely under @komed3/periodic-table. Other than the data and information mentioned below are expressly not stored. Functional cookies are used.

Data storage

This site collects a number of general data and information with each call by a person concerned or an automated system. These general data and information are stored in the server’s log files. The following can be recorded: the browser types and versions used, the operating system used by the accessing system, the website from which an accessing system reaches this site (so-called referrer), the sub-pages which are accessed via an accessing system on this site, the date and time of access to the website, an Internet Protocol address (IP address), the Internet service provider of the accessing system and other similar data and information that serve to ward off dangers in case of attacks on information technology systems.

The data stored in the log files remain untouched and are not viewed for any purposes. There is no transfer to third parties or inspection of stored data.


Only essential cookies are used on for the provision of services on this website. These are the following:

locale display language used on this website

theme website color scheme (design)


Any liability for incorrect, erroneous or incomplete information is excluded. Provided data does not claim to be correct, complete and up-to-date. does not replace the use of official tables and points out to consult additional sources if necessary. The use of is expressly intended only for general information and does not replace official sources.

In particular, the indication of toxicological data and the hazard labeling of chemical elements serve a purely informational purpose. The use of legal notices for handling such substances is generally recommended.

The complete source code of and the data used on this website are provided open source under the MIT license via the GitHub repository @komed3/periodic-table. Errors can be reported under this link or by email to