We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.
Last full accuracy audit: 2026-08-28 · 5 entries checked · 8 flagged · 16 issues confirmed · 1 corrected · 15 still open
Phosphorus — The name phosphorus comes from the Greek god of the morning star
Phosphorus — [contradicted] white phosphorus is found in trace amounts in nature, such as in volcanic fumaroles and some meteorites :: All elemental forms of phosphorus are highly reactive and are therefore never found in nature.
Platinum — [contradicted] Gold is the most ductile of pure metals, not platinum. :: The source article states 'Platinum is more ductile than gold, silver or copper, thus being the most ductile of pure metals.'
Platinum — [contradicted] The radioactive isotope 190Pt undergoes alpha decay with a half-life of approximately 6.5×10^11 years. :: The source article states '190Pt ... undergoes alpha decay with a half-life of 4.83×10^11 years.'
Plutonium — [contradicted] Although not the element with the highest atomic number known to occur in nature :: Plutonium is the element with the highest atomic number known to occur in nature.
Praseodymium — [contradicted] Praseodymium is the sixth-most abundant rare-earth element and fourth-most abundant lanthanide in the Earth's crust. :: The source states it is 'the sixth-most abundant rare-earth element and fourth-most abundant lanthanide', which is not contra
Praseodymium — [contradicted] Praseodymium has only one stable isotope, 141Pr, which has 82 neutrons, a magic number conferring additional stability. :: The source confirms this exactly; no contradiction.
Radon — [contradicted] Radon was discovered in 1899 by Ernest Rutherford and Robert B. Owens. :: the source says 'Radon was discovered in 1899 by Ernest Rutherford and Robert B. Owens at McGill University in Montreal' (the page content omits 'at McGill University')
Radon — [contradicted] Radon is one of the rarest elements. :: the source says 'The instability of 222Rn, its most stable isotope, makes radon one of the rarest elements.' (the page content says 'one of the rarest elements' — this is not a contradiction, but the phras
Rubidium — [contradicted] Rubidium is the first alkali metal in the group to have a density higher than water. :: The source states 'Rubidium is the first alkali metal in the group to have a density higher than water' — the source explicitly agrees with this, so no contr
Scandium — [contradicted] Scandium is a rare-earth element used primarily in aluminium alloys. :: Usually, it is classified as a rare-earth element, together with yttrium and the lanthanides.
Scandium — [contradicted] Scandium is found exclusively in nature as the isotope 45Sc, which has a nuclear spin of 7/2. :: In nature, scandium is found exclusively as the isotope 45Sc, which has a nuclear spin of 7⁄2; this is its only stable isotope.
Silicon — [contradicted] Silicon is the eighth most common element in the universe by mass, but very rarely occurs in its pure form in the Earth's crust. More than 90% of the Earth's crust is composed of silicate minerals, making silicon the second most abundant element
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