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The log
Corrections are listed newest first, with the date, the page and what changed. Small fixes to spelling or layout are not listed.
| Date | Page | What changed |
|---|---|---|
| No corrections yet. The site was first published in November 2026. | ||
Known differences between sources
- Lawrencium (103). NIST gives its ground-state configuration as [Rn] 5f¹⁴ 7s² 7p¹; PubChem gives 6d¹. We follow NIST, which is based on measurement and modern calculation.
- Hydration enthalpies. Data books disagree by ten to twenty kJ/mol, because single-ion values can’t be measured directly. The salt lesson explains this rather than quoting one value as exact.
- Melting points, boiling points and densities are left off the element pages for now, because published values differ between sources. They will be added once each has been checked.