Periodic Element Reference (Electronegativity / Configuration / Oxidation)
Per-element lookup of period / group / block / Pauling electronegativity / electron configuration / common oxidation states. Covers H through Kr plus Ag / I / Au / Hg / Pb. By atomic number, symbol, or name.
Formula and source
Lookup table over atomic number, symbol, or name. Returns period / group / block / Pauling electronegativity / electron configuration / common oxidation states.
IUPAC atomic numbers and element names (current IUPAC). Pauling electronegativity per Pauling, 'The Nature of the Chemical Bond' (3rd ed., 1960). Electron configurations per NIST Atomic Spectra Database. Common oxidation states per Greenwood + Earnshaw, 'Chemistry of the Elements' (2nd ed., 1997); Cotton + Wilkinson, 'Advanced Inorganic Chemistry'.
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