TRUST & TRANSPARENCY
Terms of use
Version 1.2 · 23 September 2026
An educational resource
Periodic table provides educational information about chemistry. All learning pages are freely accessible without an account.
Accuracy and responsible use
Values may depend on measurement conditions, source dates or scientific uncertainty. Check primary sources before relying on a value. This website is not a laboratory protocol, safety data sheet, or professional medical, engineering or regulatory advice.
Fair use of the service
Do not disrupt the website, attempt unauthorised access, misrepresent the source of content. Scientific citations and third-party materials remain subject to their own terms.
Limits of responsibility
You are responsible for your decisions and for using appropriate expert supervision. We do not promise error-free information or uninterrupted service. Responsibility for loss depends on the circumstances and applicable law. Nothing in these terms excludes rights or liability that the law does not permit to be excluded, including any applicable duties concerning personal data.
Operation and changes
The website is operated from the Sultanate of Oman. These terms are subject to applicable Omani law without taking away mandatory user rights. Material changes to these terms are shown on this page. Operator and contact details should be completed before public launch.